Definition Urticaria (hives): transient, pruritic, erythematous wheals due to mast cell degranulation and histamine release. Duration of individual lesions: <24…
Browsing: Dermatology
Definition Erysipelas is an acute bacterial infection of the upper dermis and superficial lymphatics, producing a well-demarcated, raised area of…
Definition Cellulitis is an acute bacterial infection of the dermis and subcutaneous tissue, usually spreading rapidly with poorly demarcated edges.…