<unk> s are a skin condition that may occur at sites of combined pressure and<unk>  (such as the hands or feet), and may be enhanced by heat, moisture, or cotton socks.<unk> s are characterized by vesicles or bullae.
Friction blister
Fracture blister
Edema blister
Delayed blister
Plantar wart
Bauxite fibrosis
Diabetic bulla
Cold abscess