Tag Sarbjit S. Saini

Urticaria and Angioedema

Definition Acute and chronic urticaria, which involve the dermis, are caused by the excessive release of histamine from mast cells—sometimes acute and sometimes chronic, and sometimes with and sometimes without a trigger. Angioedema, which also involves subcutaneous tissue, can accompany…

Urticaria and Angioedema

Synonyms ▪ Wheals – hives, nettle rash ▪ Angioedema – Quincke edema, angioneurotic edema Key features ▪ Urticaria is characterized by transient skin or mucosal swellings due to plasma leakage. Superficial dermal swellings are wheals, and deep swellings of the…