blistery

Blistery is an adjective used to describe something that is characterized by the presence of blisters or blister-like surfaces. In medical contexts, blistery usually refers to the skin or mucous membranes displaying fluid-filled elevations, typically arising from friction, burns, chemical irritation, or certain diseases. The term is commonly applied to conditions in which large fluid-filled lesions, called bullae, are prominent.

Mechanism and types: Blisters form when pressure or injury causes separation of layers of the skin, allowing fluid to accumulate between them. Small blisters are vesicles (<5 mm); larger lesions are bullae (>5 mm). Common causes include friction (e.g., ill-fitting footwear), thermal burns (first or second degree), chemical irritants, sunburn, allergic contact dermatitis, and autoimmune or infectious bullous diseases.

Diagnosis and presentation: Patients report a localized, fluid-filled swelling that may be painful or itchy. Examination distinguishes vesicles or bullae from other lesions. When infection is suspected, tests such as swabs or cultures may be used; in persistent or widespread blistering, a dermatologist may perform biopsy.

Treatment and prognosis: In uncomplicated cases, guidelines emphasize keeping the area clean, protecting with a sterile or nonadherent dressing, and avoiding rupture. Smaller blisters may be left intact; larger or painful blisters or those at risk of infection may require drainage by sterile technique and topical antibiotics. Underlying causes require treatment (e.g., corticosteroids for dermatitis, wound care for burns). Most blistery lesions heal as the skin regenerates, though healing time depends on cause and extent.