What causes it?
There are distinct types of urticaria:
Acute urticaria may be caused by an allergy and can last between several hours and six weeks
Chronic urticaria isn't usually caused by an allergy and persists beyond six weeks
Physical urticaria is triggered by physical factors and lasts only an hour or two
What are the symptoms?
In chronic cases, the itchiness may cause sleepless nights and lead to depression
The rash is very itchy and consists of a number of raised pale bumpy weals surrounded by red skin. Ordinary urticaria tends to move about or migrate all over the skin surface. In chronic cases, the itchiness may cause sleepless nights and lead to depression.
The condition tends to settle and then relapse again at times of viral illness, stress and after taking medication that contains aspirin. This chronic pattern may recur for many years.
Now, you know what kind of suffering I am going through right now :(