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Symptoms directory Browse by Alphabetic Order
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Hyperventilation
Terms related to Hyperventilation:

* Abnormally Rapid Breathing
* Breathlessness
* Dizziness
* Increased Respiratory Rate
* Overbreathing
* Rapid Breathing
* Tachypnea

Hyperventilation refers to overbreathing, in which ventilation exceeds the metabolic demand, and its related physiological consequences. Excessive breathing can cause dizziness, lightheadedness, weakness, shortness of breath, a sense of unsteadiness, muscle spasms in the hands and feet, and a tingling feeling around the mouth and fingertips. All of these symptoms are the result of abnormally low levels of carbon dioxide in the blood caused by overbreathing.

The term hyperventilation syndrome (HVS) is sometimes used to describe the effects of hyperventilation observed in an emergency department setting. Many acute (sudden onset) cases of hyperventilation arise from panic, anxiety, and other emotional conditions. Hyperventilation, particularly chronic hyperventilation (that persists over time), can also be due to a range of medical conditions.
Headache
Terms related to Headache:

* Cephalgia
* Pain, Head

A headache is a pain in the head with the pain being above the eyes or the ears, behind the head (occipital), or in the back of the upper neck. Headache, like chest pain or back ache, has many causes.

All headaches are considered primary headaches or secondary headaches. Primary headaches are not associated with other diseases. Examples of primary headaches are migraine headaches, tension headaches, and cluster headaches. Secondary headaches are caused by other diseases. The associated disease may be minor or major.
Hair Loss
Terms related to Hair Loss:

* Alopecia
* Baldness
* Loss of Hair

There are many types of alopecia (baldness or hair loss), each with a different cause. Alopecia may be localized to the front and top of the head as in common male pattern baldness. It may be patchy as in a condition called alopecia areata. Or it can involve the entire head as in alopecia capitis totalis. The word "alopecia" comes from the Greek "alopex" for "fox." Foxes are less furry when afflicted with a skin disease (the "mange") which causes them to lose their hair. When a fancier word for "baldness" was sought, the mangy fox supplied it -- "alopecia" or, if you wish, "fox-mange" -- not a very positive image to associate with baldness!
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