Condition	Characteristics
Cercarial dermatitis	Papular urticaria appears following exposure to fresh or saltwater; spares areas covered by swimwear
Cutaneous reaction to arthropod bites	Intensely pruritic papules and urticaria; generally confined to exposed areas of the ankles and legs
Seabather's eruption (marine dermatitis)	Inflammatory, erythematous papular or papulovesicular eruption that occurs during or shortly after wading or swimming in saltwater; monomorphous; affects areas covered by swimsuit
Secondary syphilis	Widespread eruption of pink to copper-colored papules, often involving the palms and soles; polymorphous; lesions may be annular or ellipsoid
Varicella	Diffuse papulovesicular, moderately pruritic eruption; lesions evolve from papular to vesicular stage with subsequent crusting; centrifugal spread