How to Ease a Crisis of Urticaria
Urticaria is a rash located on the skin, consisting of wheals, itchy, transient and variable. Hives can be acute (in this case quickly down), or chronic.
Hives can respond to multiple etiologies, of which not always know the cause, particularly when chronic. Thus, from physical urticaria may be due to cold, heat, excitement, sun, or even the effort (in this case we speak of cholinergic urticaria).
Hives food, meanwhile, may be due to a single food (eg strawberries, chocolate, egg, etc.) Or an additive in some foods, such as a dye, a fragrance, etc.
Hives can be caused by medication. In this case, it is an allergic reaction, namely aspirin, iodine, penicillin, the sulfonamides, etc. Finally, the rash may occur after a sensitization to an infectious agent. In this case, it is essential to know its cause.
The source can be bacterial, micósico, parasitic, or viral (particularly in the case of preicteric phase of viral hepatitis). In these cases, dental analysis should also consult with a dermatologist.
Another type of possible causes, namely along a general infection (systemic lupus erythematosus, blood disorders, visceral cancer, hypothyroidism …).
You may also be a contact urticaria: the case of a reaction to nettles or jellyfish, or even in the context of atopy, ie an association with asthma, eczema, hay fever, etc. Of acute urticaria have its own characteristics.