Heat hives? heat rashes??

i had cold hives when i was 15 but when i was 16 wierd enough it was gone but heat hives came instead.. now even just walking a short distance i get hives because of the heat and i dont know why ... walking exercising just under the sun or when im frusfrated ill get hives they're not like big bumps, they're kinda like small red spots all over my body and yes do itch a little... does anyone have the same problem? any remedies for it? like skin doctors western doctors chiense doctors or house remedies? its causing a big problem to me i dare not do sports and go under the sun anymore =(

Heat urticaria is an extremely rare condition in which hives develop 2 to 5 minutes after contact with a warm stimulus. The hives usually resolve within 1 hour. This condition is also called localized heat urticaria distinguishing it from generalized heat urticaria, or cholinergic urticaria.

Diagnosis
Heat urticaria is diagnosed by apply a test tube of warm water to the skin of the forearm. The characteristic hives should develop within minutes.

Treatment
Antihistamines may be helpful to treat heat urticaria. Some patients have been treated with desensitization with hot baths, but this therapy must be initiated under medical care.

Cold urticaria occurs in two forms. The rare form is hereditary and manifests as hives all over the body 9 to 18 hours after cold exposure. The common form of cold urticaria presents with the rapid onset of hives on the face, neck, or hands after exposure to cold.

Cold urticaria is common and lasts for an average of 5 to 6 years. The population most affected is young adults age 18 to 25 years. Many people with cold urticaria also have dermographism and cholinergic urticaria.

Severe reactions can be seen with exposure to cold water. Swimming in cold water is the most common cause of a severe reaction. This can cause a massive release of histamine resulting in low blood pressure, fainting, shock, and even death.

Diagnosis
Cold urticaria is diagnosed by holding an ice cube against the skin of the forearm for 1 to 5 minutes.

Heat rash -- also called prickly heat or miliaria -- is a common condition in which areas of the skin itch intensely and often feel prickly or sting due to overheating. Heat rash looks like tiny bumps surrounded by a zone of red skin. It usually occurs on clothed parts of the body, such as the back, abdomen, neck, upper chest, groin, or armpits and goes away on its own within a few days. In severe forms, however, heat rash can interfere with the body's heat-regulating mechanism and cause fever, heat exhaustion, and even death.

Heat rash occurs most often in hot, humid conditions. It's most common in infants. Active people, newborns in incubators, and bedridden patients with fever also are more likely to get heat rash.

What Causes It?


Heat rash begins with excessive perspiration, usually in a hot, humid environment. The perspiration damages cells on the surface of the skin, forming a barrier and trapping sweat beneath the skin, where it builds up, causing the characteristic bumps. As the bumps burst and sweat is released, you may feel the prickly, or stinging, sensation that gives this condition its common name.

Sometimes heat hives is a problem with dry skin, I suggest taking a high quality cod liver oil, a teaspoon when you wake up but 30 minutes before eating. You can shake it up with milk and chug it down. Report It