blistering distal dactylitis blistering distal dactylitis blistering distal dactylitis is a cutaneous condition characterized by tense superficial bullae occurring on a tender erythematous base over the volar fat pad of the phalanx of a finger or thumb.: 262 the most common organism responsible for this is beta-hemolytic streptococci. blistering distal dactylitisspecialtydermatology