Cause you - Jul 28, 2022 · Causes. Scabies is caused by a tiny, eight-legged mite. The female mite burrows just under the skin and makes a tunnel where it lays eggs. The eggs hatch, and the mite larvae travel to the surface of the skin, where they mature. These mites can then spread to other areas of the skin or to the skin of other people.

 
Jun 18, 2020 · Signs and symptoms of balance problems include: Sense of motion or spinning (vertigo) Feeling of faintness or lightheadedness (presyncope) Loss of balance or unsteadiness. Falling or feeling like you might fall. Feeling a floating sensation or dizziness. Vision changes, such as blurriness. Confusion. . Uta dean

Causes. Scabies is caused by a tiny, eight-legged mite. The female mite burrows just under the skin and makes a tunnel where it lays eggs. The eggs hatch, and the mite larvae travel to the surface of the skin, where they mature. These mites can then spread to other areas of the skin or to the skin of other people.Nov 23, 2021 · Possible causes of taste disorders and a loss of taste can include: upper respiratory infections, such as the common cold. COVID-19. sinus infections. middle ear infections. poor oral hygiene and ... A muscle cramp is a sudden, unexpected tightening of one or more muscles. Sometimes called a charley horse, a muscle cramp can be very painful. Exercising or working hard, especially in heat, can lead to muscle cramps. Some medicines and illnesses also might cause muscle cramps. Muscle cramps aren't usually harmful.Dec 14, 2022 · Coma is a state of prolonged loss of consciousness. It can have a variety of causes, including traumatic head injury, stroke, brain tumor, or drug or alcohol intoxication. A coma may even be caused by an underlying illness, such as diabetes or an infection. Coma is a medical emergency. Quick action is needed to preserve life and brain function. Things you drink or medicines you take that cause your body to make more urine. Frequent urination often happens along with other urinary signs and symptoms, such as: Feeling pain or discomfort when you pass urine. Having a strong urge to pass urine. Having trouble passing urine. Leaking urine. Passing urine that's an unusual color.T he Lovers puts a big question to its audience, and how you respond is likely to determine whether you find this spiky romcom wonkily charming or amoral and grating. A mildly famous man meets a ...Try to make meals relaxed occasions; eating when you're stressed or on the run increases the air you swallow. Avoid carbonated drinks and beer. They release carbon dioxide gas. Skip the gum and hard candy. When you chew gum or suck on hard candy, you swallow more often than normal. Part of what you're swallowing is air. Don't smoke.Feb 9, 2023 · Urinary incontinence may also be caused by an easily treatable medical condition, such as: Urinary tract infection. Infections can irritate your bladder, causing you to have strong urges to urinate and, sometimes, incontinence. Constipation. The rectum is located near the bladder and shares many of the same nerves. Emotional exhaustion can result from chronic life stress and emotionally taxing events. You can relieve symptoms by eliminating stressors, if possible, and practicing certain techniques.Symptoms. High cholesterol has no symptoms. A blood test is the only way to detect if you have it. When to see a doctor. According to the National Heart, Lung, and Blood Institute (NHLBI), a person's first cholesterol screening should occur between the ages of 9 and 11, and then be repeated every five years after that.Causes. The veins around the anus tend to stretch under pressure and may bulge or swell. Hemorrhoids can develop from increased pressure in the lower rectum due to: Straining during bowel movements. Sitting for long periods of time, especially on the toilet. Having chronic diarrhea or constipation. Being obese.Mar 29, 2023 · Symptoms. Essential tremor symptoms: Begin gradually, and usually are more noticeable on one side of the body. Worsen with movement. Usually occur in the hands first, affecting one hand or both hands. Can include a "yes-yes" or "no-no" motion of the head. May be aggravated by emotional stress, fatigue, caffeine or temperature extremes. a. : a reason for an action or condition : motive. b. : something that brings about an effect or a result. trying to find the cause of the accident. c. : a person or thing that is the occasion of an action or state. a cause for celebration. especially : an agent that brings something about. May 17, 2022 · Chronic, severe vomiting or diarrhea and other causes of dehydration. This causes your body to lose electrolytes, such as sodium, and also increases ADH levels. Drinking too much water. Drinking excessive amounts of water can cause low sodium by overwhelming the kidneys' ability to excrete water. The most common reason for fainting is a sudden drop in blood pressure, which reduces blood flow and oxygen to your brain. There are many reasons why a drop in blood pressure could lead to a temporary loss of consciousness: Cardiac syncope: This type of syncope involves fainting because of a heart problem. Many heart conditions can affect how ... Your genes may make you more likely to have ear damage from sound or from aging. Noises on the job. Jobs where loud noise is constant, such as farming, construction or factory work, can lead to damage inside the ear. Noises at play. Exposure to explosive noises, such as from firearms and jet engines, can cause immediate, permanent hearing loss.Jun 19, 2021 · Emotional and behavioral symptoms. Signs and symptoms of social anxiety disorder can include constant: Fear of physical symptoms that may cause you embarrassment, such as blushing, sweating, trembling or having a shaky voice. Avoidance of doing things or speaking to people out of fear of embarrassment. Mar 27, 2023 · Takeaway. You may get cold easily due to certain health conditions, including anemia, dehydration, or vitamin deficiency. Treatment can depend on the cause. Everyone’s body has a slightly ... Itchy skin is an irritating sensation that makes you want to scratch. It's also called pruritus (proo-RIE-tus). Itchy skin is often caused by dry skin and is common in older adults, as skin tends to become drier with age. Depending on the cause of your itchiness, your skin may look no different than usual or it may be inflamed, rough or have bumps.Your genes may make you more likely to have ear damage from sound or from aging. Noises on the job. Jobs where loud noise is constant, such as farming, construction or factory work, can lead to damage inside the ear. Noises at play. Exposure to explosive noises, such as from firearms and jet engines, can cause immediate, permanent hearing loss.Jun 19, 2021 · Emotional and behavioral symptoms. Signs and symptoms of social anxiety disorder can include constant: Fear of physical symptoms that may cause you embarrassment, such as blushing, sweating, trembling or having a shaky voice. Avoidance of doing things or speaking to people out of fear of embarrassment. Jun 13, 2020 · Chest pain when you breathe or cough. Confusion or changes in mental awareness (in adults age 65 and older) Cough, which may produce phlegm. Fatigue. Fever, sweating and shaking chills. Lower than normal body temperature (in adults older than age 65 and people with weak immune systems) Nausea, vomiting or diarrhea. Symptoms of depersonalization include: Feelings that you're seeing your thoughts, feelings, or body or parts of your body from the outside. For example, you may feel like you're floating in the air above yourself. Feeling like a robot or that you're not in control of what you say or how you move. The sense that your body, legs or arms appear ...Common signs and symptoms of GERD include: A burning sensation in your chest (heartburn), usually after eating, which might be worse at night or while lying down. Backwash (regurgitation) of food or sour liquid. Upper abdominal or chest pain. Trouble swallowing (dysphagia) Sensation of a lump in your throat. If you have nighttime acid reflux ...Parkinson's symptoms may include: Tremor. Rhythmic shaking, called tremor, usually begins in a limb, often your hand or fingers. You may rub your thumb and forefinger back and forth. This is known as a pill-rolling tremor. Your hand may tremble when it's at rest. The shaking may decrease when you are performing tasks.Mar 27, 2023 · Takeaway. You may get cold easily due to certain health conditions, including anemia, dehydration, or vitamin deficiency. Treatment can depend on the cause. Everyone’s body has a slightly ... Takeaway. You may get cold easily due to certain health conditions, including anemia, dehydration, or vitamin deficiency. Treatment can depend on the cause. Everyone’s body has a slightly ...Emotional and behavioral symptoms. Signs and symptoms of social anxiety disorder can include constant: Fear of physical symptoms that may cause you embarrassment, such as blushing, sweating, trembling or having a shaky voice. Avoidance of doing things or speaking to people out of fear of embarrassment.Don't rule out red meat as a possible cause of your reaction. That's even more important if you live or spend time in parts of the world where alpha-gal syndrome has been reported. Get emergency medical treatment if you have symptoms of a serious allergic reaction that causes trouble breathing, called anaphylaxis, such as: Trouble breathing.Feb 9, 2023 · Urinary incontinence may also be caused by an easily treatable medical condition, such as: Urinary tract infection. Infections can irritate your bladder, causing you to have strong urges to urinate and, sometimes, incontinence. Constipation. The rectum is located near the bladder and shares many of the same nerves. Symptoms. At first, the cloudiness in your vision caused by a cataract may affect only a small part of the eye's lens and you may be unaware of any vision loss. As the cataract grows larger, it clouds more of your lens and distorts the light passing through the lens. This may lead to more-noticeable symptoms.Symptoms of sepsis. Symptoms of sepsis may include: Change in mental status. Fast, shallow breathing. Sweating for no clear reason. Feeling lightheaded. Shivering. Symptoms specific to the type of infection, such as painful urination from a urinary tract infection or worsening cough from pneumonia. Symptoms of sepsis are not specific.The signs and symptoms of benign paroxysmal positional vertigo (BPPV) may include: Dizziness. A sense that you or your surroundings are spinning or moving (vertigo) A loss of balance or unsteadiness. Nausea. Vomiting. The signs and symptoms of BPPV can come and go and commonly last less than one minute. Episodes of BPPV can disappear for some ...Causes include age, medications, and vasculitis. A fall, blow, or anything else that exerts sudden high pressure on the skin can cause a bruise. Very forceful blows can damage bones, causing deep ...May 14, 2022 · This is a sudden drop in blood pressure when standing from a sitting position or after lying down. Causes include dehydration, long-term bed rest, pregnancy, certain medical conditions and some medications. This type of low blood pressure is common in older adults. Postprandial hypotension. This drop in blood pressure occurs 1 to 2 hours after ... Signs or symptoms of gas or gas pains include: Burping. Passing gas. Pain, cramps or a knotted feeling in your abdomen. A feeling of fullness or pressure in your abdomen (bloating) An observable increase in the size of your abdomen (distention) Burping is normal, particularly during or right after a meal. Most people pass gas up to 20 times a day.Your genes may make you more likely to have ear damage from sound or from aging. Noises on the job. Jobs where loud noise is constant, such as farming, construction or factory work, can lead to damage inside the ear. Noises at play. Exposure to explosive noises, such as from firearms and jet engines, can cause immediate, permanent hearing loss.A variety of conditions can cause permanent or temporary hair loss, including hormonal changes due to pregnancy, childbirth, menopause and thyroid problems. Medical conditions include alopecia areata (al-o-PEE-she-uh ar-e-A-tuh), which is immune system related and causes patchy hair loss, scalp infections such as ringworm, and a hair-pulling ...[Verse 1] There goes my heart beating 'Cause you are the reason I'm losing my sleep Please come back now And there goes my mind racing And you are the reason That I'm still breathing I'm...Emotional exhaustion can result from chronic life stress and emotionally taxing events. You can relieve symptoms by eliminating stressors, if possible, and practicing certain techniques.Signs and symptoms associated with dysphagia can include: Pain while swallowing. Inability to swallow. A sensation of food getting stuck in the throat or chest or behind the breastbone (sternum) Drooling. Hoarseness. Food coming back up (regurgitation) Frequent heartburn. Food or stomach acid backing up into the throat.Jan 6, 2022 · If you have asthma or cystic fibrosis, see your doctor whenever you notice a change in your breathing. Although aspergillosis may not be the cause, it's important to have breathing problems evaluated. If you have a weakened immune system and develop an unexplained fever, shortness of breath or a cough that brings up blood, get immediate medical ... 1 a : a reason for an action or condition : motive b : something that brings about an effect or a result trying to find the cause of the accident c : a person or thing that is the occasion of an action or state a cause for celebration especially : an agent that brings something about She is the cause of your troubles. d : sufficient reasonA vaginal yeast infection is a fungal infection that causes irritation, discharge and intense itchiness of the vagina and the vulva — the tissues at the vaginal opening. Also called vaginal candidiasis, vaginal yeast infection affects up to 3 out of 4 women at some point in their lifetimes. Many women experience at least two episodes.Peripheral neuropathy happens when the nerves that are located outside of the brain and spinal cord (peripheral nerves) are damaged. This condition often causes weakness, numbness and pain, usually in the hands and feet. It also can affect other areas and body functions including digestion and urination. The peripheral nervous system sends ... Jan 6, 2022 · Try to make meals relaxed occasions; eating when you're stressed or on the run increases the air you swallow. Avoid carbonated drinks and beer. They release carbon dioxide gas. Skip the gum and hard candy. When you chew gum or suck on hard candy, you swallow more often than normal. Part of what you're swallowing is air. Don't smoke. This is a sudden drop in blood pressure when standing from a sitting position or after lying down. Causes include dehydration, long-term bed rest, pregnancy, certain medical conditions and some medications. This type of low blood pressure is common in older adults. Postprandial hypotension. This drop in blood pressure occurs 1 to 2 hours after ...Aching pain in and around your ear. Difficulty chewing or pain while chewing. Aching facial pain. Locking of the joint, making it difficult to open or close your mouth. TMJ disorders can also cause a clicking sound or grating sensation when you open your mouth or chew. But if there's no pain or limitation of movement associated with your jaw ...A variety of conditions can cause permanent or temporary hair loss, including hormonal changes due to pregnancy, childbirth, menopause and thyroid problems. Medical conditions include alopecia areata (al-o-PEE-she-uh ar-e-A-tuh), which is immune system related and causes patchy hair loss, scalp infections such as ringworm, and a hair-pulling ...Nov 30, 2022 · Tinnitus is when you experience ringing or other noises in one or both of your ears. The noise you hear when you have tinnitus isn't caused by an external sound, and other people usually can't hear it. Tinnitus is a common problem. It affects about 15% to 20% of people, and is especially common in older adults. Jan 6, 2022 · Try to make meals relaxed occasions; eating when you're stressed or on the run increases the air you swallow. Avoid carbonated drinks and beer. They release carbon dioxide gas. Skip the gum and hard candy. When you chew gum or suck on hard candy, you swallow more often than normal. Part of what you're swallowing is air. Don't smoke. Itchy skin is an irritating sensation that makes you want to scratch. It's also called pruritus (proo-RIE-tus). Itchy skin is often caused by dry skin and is common in older adults, as skin tends to become drier with age. Depending on the cause of your itchiness, your skin may look no different than usual or it may be inflamed, rough or have bumps.Takeaway. You may get cold easily due to certain health conditions, including anemia, dehydration, or vitamin deficiency. Treatment can depend on the cause. Everyone’s body has a slightly ...Causes. When you have a food allergy, your immune system mistakenly identifies a specific food or a substance in food as something harmful. In response, your immune system triggers cells to release an antibody known as immunoglobulin E (IgE) to neutralize the allergy-causing food or food substance (the allergen).Don't rule out red meat as a possible cause of your reaction. That's even more important if you live or spend time in parts of the world where alpha-gal syndrome has been reported. Get emergency medical treatment if you have symptoms of a serious allergic reaction that causes trouble breathing, called anaphylaxis, such as: Trouble breathing.Make sure that no one smokes in your home. Away from home, stay in smoke-free environments. Breast-feed your baby. If possible, breast-feed your baby for at least six months. Breast milk contains antibodies that may offer protection from ear infections. If you bottle-feed, hold your baby in an upright position.Signs and symptoms associated with dysphagia can include: Pain while swallowing. Inability to swallow. A sensation of food getting stuck in the throat or chest or behind the breastbone (sternum) Drooling. Hoarseness. Food coming back up (regurgitation) Frequent heartburn. Food or stomach acid backing up into the throat.Jan 6, 2023 · Hemochromatosis (he-moe-kroe-muh-TOE-sis) causes your body to absorb too much iron from the food you eat. Excess iron is stored in your organs, especially your liver, heart and pancreas. Too much iron can lead to life-threatening conditions, such as liver disease, heart problems and diabetes. There are a few types of hemochromatosis, but the ... May 26, 2023 · Parkinson's symptoms may include: Tremor. Rhythmic shaking, called tremor, usually begins in a limb, often your hand or fingers. You may rub your thumb and forefinger back and forth. This is known as a pill-rolling tremor. Your hand may tremble when it's at rest. The shaking may decrease when you are performing tasks. Nov 30, 2022 · Tinnitus is when you experience ringing or other noises in one or both of your ears. The noise you hear when you have tinnitus isn't caused by an external sound, and other people usually can't hear it. Tinnitus is a common problem. It affects about 15% to 20% of people, and is especially common in older adults. Gastroparesis can cause several complications, such as: Severe dehydration. Ongoing vomiting can cause dehydration. Malnutrition. Poor appetite can mean you don't take in enough calories, or you may be unable to absorb enough nutrients due to vomiting. Undigested food that hardens and remains in your stomach.Things you drink or medicines you take that cause your body to make more urine. Frequent urination often happens along with other urinary signs and symptoms, such as: Feeling pain or discomfort when you pass urine. Having a strong urge to pass urine. Having trouble passing urine. Leaking urine. Passing urine that's an unusual color.Coma is a state of prolonged loss of consciousness. It can have a variety of causes, including traumatic head injury, stroke, brain tumor, or drug or alcohol intoxication. A coma may even be caused by an underlying illness, such as diabetes or an infection. Coma is a medical emergency. Quick action is needed to preserve life and brain function.Signs and symptoms of stroke include: Trouble speaking and understanding what others are saying. You may experience confusion, slur words or have difficulty understanding speech. Paralysis or numbness of the face, arm or leg. You may develop sudden numbness, weakness or paralysis in the face, arm or leg.Hemochromatosis (he-moe-kroe-muh-TOE-sis) causes your body to absorb too much iron from the food you eat. Excess iron is stored in your organs, especially your liver, heart and pancreas. Too much iron can lead to life-threatening conditions, such as liver disease, heart problems and diabetes. There are a few types of hemochromatosis, but the ...Oct 22, 2022 · A number of things can cause a rapid heart rate (tachycardia). If you feel like your heart is beating too fast, make an appointment to see a health care provider. Seek immediate medical help if you have shortness of breath, weakness, dizziness, lightheadedness, fainting or near fainting, and chest pain or discomfort. Nov 15, 2022 · Most reactions to common food allergens — peanuts or shellfish, for example — happen within minutes after you are exposed to them. In alpha-gal syndrome, reactions usually appear about 3 to 6 hours after you are exposed. Foods that can cause a reaction include: Red meat, such as beef, pork or lamb. Organ meats. Jan 6, 2022 · Try to make meals relaxed occasions; eating when you're stressed or on the run increases the air you swallow. Avoid carbonated drinks and beer. They release carbon dioxide gas. Skip the gum and hard candy. When you chew gum or suck on hard candy, you swallow more often than normal. Part of what you're swallowing is air. Don't smoke. Nov 30, 2022 · Hyperthyroidism sometimes looks like other health problems. That can make it hard to diagnose. It can cause many symptoms, including: Losing weight without trying. Fast heartbeat, a condition called tachycardia. Irregular heartbeat, also called arrhythmia. Pounding of the heart, sometimes called heart palpitations. Increased hunger. Aug 5, 2022 · The signs and symptoms of benign paroxysmal positional vertigo (BPPV) may include: Dizziness. A sense that you or your surroundings are spinning or moving (vertigo) A loss of balance or unsteadiness. Nausea. Vomiting. The signs and symptoms of BPPV can come and go and commonly last less than one minute. Episodes of BPPV can disappear for some ... Causes. A number of diseases and conditions can cause diarrhea, including: Viruses. Viruses that can cause diarrhea include Norwalk virus (also known as norovirus), enteric adenoviruses, astrovirus, cytomegalovirus and viral hepatitis. Rotavirus is a common cause of acute childhood diarrhea.a. : a reason for an action or condition : motive. b. : something that brings about an effect or a result. trying to find the cause of the accident. c. : a person or thing that is the occasion of an action or state. a cause for celebration. especially : an agent that brings something about. If you have epilepsy, you're 13 to 19 times more likely to drown while swimming or bathing than the rest of the population because of the possibility of having a seizure while in the water. Car accidents. A seizure that causes either loss of awareness or control can be dangerous if you're driving a car or operating other equipment.Urinary incontinence may also be caused by an easily treatable medical condition, such as: Urinary tract infection. Infections can irritate your bladder, causing you to have strong urges to urinate and, sometimes, incontinence. Constipation. The rectum is located near the bladder and shares many of the same nerves.Urinary incontinence may also be caused by an easily treatable medical condition, such as: Urinary tract infection. Infections can irritate your bladder, causing you to have strong urges to urinate and, sometimes, incontinence. Constipation. The rectum is located near the bladder and shares many of the same nerves.Feb 10, 2023 · Symptoms of sepsis. Symptoms of sepsis may include: Change in mental status. Fast, shallow breathing. Sweating for no clear reason. Feeling lightheaded. Shivering. Symptoms specific to the type of infection, such as painful urination from a urinary tract infection or worsening cough from pneumonia. Symptoms of sepsis are not specific. Signs and symptoms of balance problems include: Sense of motion or spinning (vertigo) Feeling of faintness or lightheadedness (presyncope) Loss of balance or unsteadiness. Falling or feeling like you might fall. Feeling a floating sensation or dizziness. Vision changes, such as blurriness. Confusion.Sleep apnea causes you to stop breathing periodically throughout the night, interrupting your sleep. Restless legs syndrome causes unpleasant sensations in your legs and an almost irresistible desire to move them, which may prevent you from falling asleep. Caffeine, nicotine and alcohol. Coffee, tea, cola and other caffeinated drinks are ...

Emotional and behavioral symptoms. Signs and symptoms of social anxiety disorder can include constant: Fear of physical symptoms that may cause you embarrassment, such as blushing, sweating, trembling or having a shaky voice. Avoidance of doing things or speaking to people out of fear of embarrassment.. Enchanted fairies dollar200 package

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Try to make meals relaxed occasions; eating when you're stressed or on the run increases the air you swallow. Avoid carbonated drinks and beer. They release carbon dioxide gas. Skip the gum and hard candy. When you chew gum or suck on hard candy, you swallow more often than normal. Part of what you're swallowing is air. Don't smoke.Mar 27, 2023 · Takeaway. You may get cold easily due to certain health conditions, including anemia, dehydration, or vitamin deficiency. Treatment can depend on the cause. Everyone’s body has a slightly ... Gout is a common and complex form of arthritis that can affect anyone. It's characterized by sudden, severe attacks of pain, swelling, redness and tenderness in one or more joints, most often in the big toe. An attack of gout can occur suddenly, often waking you up in the middle of the night with the sensation that your big toe is on fire.Standing for too long. Not getting enough sleep. Dehydration. Becoming overheated. Emotional stress. Fear. Seeing blood. Straining while having a bowel movement and symptoms related to irritable bowel syndrome may also provoke the vasovagal reflex. Medical Causes of Syncope or Fainting.Try to make meals relaxed occasions; eating when you're stressed or on the run increases the air you swallow. Avoid carbonated drinks and beer. They release carbon dioxide gas. Skip the gum and hard candy. When you chew gum or suck on hard candy, you swallow more often than normal. Part of what you're swallowing is air. Don't smoke.Nov 30, 2022 · An accident or attack that causes radiation sickness would no doubt cause a lot of attention and public concern. If such an event occurs, monitor radio, television or online reports to learn about emergency instructions for your area. If you know you've been overexposed to radiation, seek emergency medical care. A muscle cramp is a sudden, unexpected tightening of one or more muscles. Sometimes called a charley horse, a muscle cramp can be very painful. Exercising or working hard, especially in heat, can lead to muscle cramps. Some medicines and illnesses also might cause muscle cramps. Muscle cramps aren't usually harmful.When a cavity is just beginning, you may not have any symptoms at all. As the decay gets larger, it may cause signs and symptoms such as: Toothache, spontaneous pain or pain that occurs without any apparent cause. Tooth sensitivity. Mild to sharp pain when eating or drinking something sweet, hot or cold.Nausea and vomiting may occur separately or together. Common causes include: Chemotherapy. Gastroparesis (a condition in which the muscles of the stomach wall don't function properly, interfering with digestion) General anesthesia. Intestinal obstruction. Migraine. Morning sickness. Motion sickness: First aid.Jul 7, 2023 · Show transcript. A migraine is a headache that can cause severe throbbing pain or a pulsing sensation, usually on one side of the head. It's often accompanied by nausea, vomiting, and extreme sensitivity to light and sound. Migraine attacks can last for hours to days, and the pain can be so bad that it interferes with your daily activities. Common signs and symptoms of GERD include: A burning sensation in your chest (heartburn), usually after eating, which might be worse at night or while lying down. Backwash (regurgitation) of food or sour liquid. Upper abdominal or chest pain. Trouble swallowing (dysphagia) Sensation of a lump in your throat. If you have nighttime acid reflux ...Symptoms. Essential tremor symptoms: Begin gradually, and usually are more noticeable on one side of the body. Worsen with movement. Usually occur in the hands first, affecting one hand or both hands. Can include a "yes-yes" or "no-no" motion of the head. May be aggravated by emotional stress, fatigue, caffeine or temperature extremes..

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