Hives has bring allergic reaction

Hives is an allergic reaction, or so-called hives is allergic disease. It occurs with typical rashes artic on the skin. Because besides affecting skin and mucous membranes and internal organs and nervous system, urticaria is considered not a single symptom, while the disease. It is quite widespread disease as women have three times more frequently than men. Can proceed in the acute form, in which case leaving for 1-4 days, or chronic form, then its duration ranged between 8-12 weeks to 6 months. If the hives, which otherwise is a disease with favorable outcome, it takes more than time for the patient can have very dangerous consequences, so should not be underestimated. Symptoms consist of a mild rise in temperature, fever, tiredness, anxiety, insomnia, vomiting and diarrhea. Finally light-red characteristic rash appears, urtica who like nettle of scald or bite of the bug. Size of the rash is different: half to five centimeters or more. He appears in different places on the body - legs, hands, face, and accompanied by itching, which is particularly strong evening. Swell and redness drool skins, especially the mouth, throat and neck. Causes of urticaria are numerous and of a different nature. They can be reduced to two: from external and internal origin. Solar urticaria - occurs due to exposure of skin to ultraviolet or visible light. It is characterized by redness and itchy urtika in parts of the skin exposed to radiation. Heat urticaria provoked by too high temperature - 50 degrees. There is frost and urticaria, which appears under the influence of low temperatures and significant temperature fluctuations.
Many plant species can cause rash: seaweed, oranges, medlar, nuts, etc. Insect bites, of which the most important are the axes, bees, hornets, spiders, mosquitoes, fleas, bedbug can also develop this disease. Hives to keep all chemicals and products that have direct contact with skin: detergent, hair dyes and others.