DEFINITION

External compression headaches can occur when anything worn on your head puts continuous pressure on your forehead or scalp.

They're most often experienced by athletes who use helmets, eye protec...
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DEFINITION

An anal fissure is a small tear in the thin, moist tissue (mucosa) that lines the anus. An anal fissure may occur when you pass hard or large stools during a bowel movement. Anal fissures typically cause pain ...
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DEFINITION

Alcohol poisoning is a serious and sometimes deadly consequence of drinking large amounts of alcohol in a short period of time. Drinking too much too quickly can affect your breathing, heart rate, body tempera...
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DEFINITION

Tachycardia is a faster than normal heart rate at rest. A healthy adult heart normally beats 60 to 100 times a minute when a person is at rest. If you have tachycardia, the heart rate in the upper chambers or ...
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DEFINITION

Eye floaters are spots in your vision. They may look to you like black or gray specks, strings or cobwebs that drift about when you move your eyes and appear to dart away when you try to look at them directly....
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DEFINITION

Esophageal Cancer is Cancer that occurs in the esophagus a long, hollow tube that runs from your throat to your stomach. Your esophagus carries food you swallow to your stomach to be digested.

Es...
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DEFINITION

Narcolepsy is a chronic sleep disorder characterized by overwhelming daytime drowsiness and sudden attacks of sleep. People with Narcolepsy often find it difficult to stay awake for long periods of time, re...
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DEFINITION

Premature ventricular contractions (PVCs) are extra, abnormal heartbeats that begin in one of your heart's two lower pumping chambers (ventricles). These extra beats disrupt your regular heart rhythm, som...
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DEFINITION

Acute liver failure is loss of liver function that occurs rapidly in days or weeks usually in a person who has no pre-existing Liver disease. Acute liver failure is less common than chronic liver failure, whi...
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DEFINITION

Obsessive-compulsive disorder (OCD) is characterized by unreasonable thoughts and fears (obsessions) that lead you to do repetitive behaviors (compulsions). It's also possible to have only obsessions or on...
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DEFINITION

Acromegaly is a hormonal disorder that develops when your pituitary gland produces too much growth hormone during adulthood. When this happens, your bones increase in size, including those of your hands, feet...
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DEFINITION

Occupational Asthma is Asthma that's caused or worsened by breathing in chemical fumes, Gases, dust or other substances on the job. Like other types of Asthma, occupational Asthmacan cause chest tigh...
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DEFINITION

Tapeworm infection is caused by ingesting food or water contaminated with tapeworm eggs or larvae. If you ingest certain tapeworm eggs, they can migrate outside your intestines and form larval cysts in body ti...
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DEFINITION

Takayasu's arteritis is a rare type of Vasculitis, a group of disorders that cause blood vessel inflammation. In Takayasu's arteritis, the inflammation primarily damages the aorta the large artery th...
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DEFINITION

Alcoholic Hepatitis Describes liver inflammation caused by drinking alcohol.

Though alcoholic Hepatitis is most likely to occur in people who drink heavily over many years, the relationship between d...
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DEFINITION

Broken Heart Syndrome is a temporary heart condition that's often brought on by stressful situations, such as the death of a loved one. People with Broken heart syndrome may have sudden Chest pain or ...
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DEFINITION

Wegener's Granulomatosis is an uncommon disorder that causes inflammation of your blood vessels. This inflammation restricts blood flow to various organs.

Wegener's Granulomatosis, which is a...
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DEFINITION

Obesity is a complex disorder involving an excessive amount of body fat. Obesity isn't just a cosmetic concern. It increases your risk of diseases and health problems, such as Heart disease, Diabetes an...
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DEFINITION

Acne is a skin condition that occurs when your hair follicles become plugged with oil and dead skin cells. Acne usually appears on your face, neck, chest, back and shoulders. Effective treatments are available...
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DEFINITION

Vulvar Cancer is a type of Cancer that occurs on the outer surface area of the female genitalia. The vulva is the area of skin that surrounds the urethra and vagina, including the clitoris and labia.

DEFINITION

Eyestrain occurs when your eyes get tired from intense use, such as driving a car for extended periods, reading or working at a computer.

Although eyestrain can be annoying, it usually isn't seri...
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DEFINITION

Essential tremor is a nervous system disorder (neurological disorder) that causes a rhythmic shaking. Essential tremor can affect almost any part of your body, but the trembling occurs most often in your hands...
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DEFINITION

Melanoma is a type of Cancer that develops in the cells that produce melanin the pigment that gives your skin its color. Your eyes also have melanin-producing cells and can develop Melanoma. Eye MelanomaÂ...
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DEFINITION

Exercise headaches occur during or after sustained, strenuous exercise. Some activities associated with exercise headaches include running, rowing, tennis, swimming and weightlifting.

Doctors divide ...
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DEFINITION

Encephalitis is inflammation of the brain. Viral infections are the most common cause of the condition.

Encephalitis can cause Flu-like symptoms, such as a Fever or severe headache. It can also cau...
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DEFINITION

Esophagitis is inflammation that may damage tissues of the esophagus, the muscular tube that delivers food from your mouth to your stomach.

Esophagitis can cause painful, difficult swallowing and Ch...
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DEFINITION

Thumb arthritis is common with aging, and occurs when cartilage wears away from the ends of the bones that form your thumb joint — also known as the carpometacarpal (CMC) joint.

Thumb arthritis can cause seve...
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DEFINITION

Blepharitis is inflammation of the eyelids. Blepharitis usually involves the part of the eyelid where the eyelashes grow and affects both eyelids.

Blepharitis commonly occurs when tiny oil glands...
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DEFINITION

In Barrett's esophagus, tissue in the tube connecting your mouth and stomach (esophagus) is replaced by tissue similar to the intestinal lining.

Barrett's esophagus is most often diagnosed ...
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DEFINITION

Viral hemorrhagic Fevers are Infectious diseases that interfere with the blood's ability to clot. These diseases can also damage the walls of tiny blood vessels, making them leaky. The internal bleeding ...
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DEFINITION

Peptic ulcers are open sores that develop on the inside lining of your esophagus, stomach and the upper portion of your small intestine. The most common symptom of a Peptic ulcer is abdominal pain.

DEFINITION

Convergence insufficiency occurs when your eyes don't work together while you're trying to focus on a nearby object. When you read or look at a close object, your eyes need to turn inward together (co...
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DEFINITION

Menorrhagia is the medical term for menstrual periods with abnormally heavy or prolonged bleeding. Although heavy menstrual bleeding is a common concern among premenopausal women, most women don't experie...
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DEFINITION

Swimmer's ear is an infection in the outer ear canal, which runs from your eardrum to the outside of your head. It's often brought on by water that remains in your ear after swimming, creating a moist...
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DEFINITION

A fever is a temporary increase in your body temperature, often due to an illness. Having a fever is a sign that something out of the ordinary is going on in your body.

For an adult, a fever may be u...
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DEFINITION

Insomnia is a persistent disorder that can make it hard to fall asleep, hard to stay asleep or both, despite the opportunity for adequate sleep. With Insomnia, you usually awaken feeling un-refreshed, which ta...
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DEFINITION

Essential thrombocythemia is an uncommon disorder in which your body produces too many blood platelets (thrombocytes). It's also known as primary thrombocythemia.

The most common symptoms of esse...
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DEFINITION

Hirsutism is a condition of unwanted, male-pattern hair growth in women. Hirsutism results in excessive amounts of stiff and pigmented hair on body areas where men typically grow hair face, chest and back.<...
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DEFINITION

Esophageal spasms are painful muscle contractions that affect your esophagus, the hollow tube between your throat and your stomach. Esophageal spasms can feel like sudden, severe Chest pain that lasts from a...
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DEFINITION

Parvovirus infection is a common and highly contagious childhood ailment sometimes called slapped-cheek disease because of the distinctive face rash that develops. Parvovirus infection has also been known a...
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DEFINITION

Esophageal Varices are abnormal, enlarged veins in the lower part of the esophagus the tube that connects the throat and stomach. Esophageal Varices occur most often in people with serious Liver diseases.

DEFINITION

Exercised-induced Asthma is a narrowing of the airways in the lungs that is triggered by strenuous exercise. It causes shortness of breath, wheezing, coughing and other symptoms during or after exercise.

DEFINITION

Alcohol intolerance can cause immediate, unpleasant reactions after you drink alcohol. The most common signs and symptoms of alcohol intolerance are stuffy nose and skin Flushing. Alcohol intolerance is caused...
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DEFINITION

Viral Gastroenteritis is an intestinal infection marked by watery Diarrhea, abdominal cramps, nausea or vomiting, and sometimes Fever.

The most common way to develop viral Gastroenteritis often cal...
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DEFINITION

Parkinson's disease is a progressive disorder of the nervous system that affects your movement. It develops gradually, sometimes starting with a barely noticeable tremor in just one hand. But while a tremo...
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DEFINITION

Factitious disorder is a serious mental disorder in which someone deceives others by appearing sick, by purposely getting sick, or by self-injury. Factitious disorder symptoms can range from mild (slight exagg...
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