Acute urticaria

Acute urticaria is a common type of urticaria and accounts for about one-third of all urticaria. Generally seen in acute allergic reactions. Onset is rapid and the rash is polymorphic. Mainly manifested as pimples, papules, vesicles, erosion, exudation, scabs, etc. based on erythematous edema, the damage is unclear, and in severe cases it can spread throughout the body and cause severe itching.