Painful inflammatory lesions typically affecting the ears, hands, and feet from chronic exposure to intermittent damp conditions, presenting with edema, erythema and cyanosis up to 12 hours after exposure, are called what?

Painful inflammatory lesions typically affecting the ears, hands, and feet from chronic exposure to intermittent damp conditions, presenting with edema, erythema and cyanosis up to 12 hours after exposure, are called what?

• A. Frostbite
• B. Trench Foot
• C. Chillblains
• D. Frostnip

Answer: (C)

Chillblains (perniosis) are a nonfreezing cold injury caused by repeated exposure to damp, cold conditions. The skin of exposed areas such as the ears, fingers, and toes becomes inflamed after warming, with edema, erythema, and a cyanotic hue that can appear up to several hours after the cold exposure ends. The underlying issue is an abnormal vasomotor response to cold-damp environments, leading to vascular congestion and inflammation when warming resumes. This distinguishes it from frostbite, which involves tissue freezing and presents with numbness, pale or mottled skin, and potential tissue necrosis during freezing temperatures; frostnip, a milder superficial freezing injury, causes numbness with minimal skin change and resolves with warming. Trench foot stems from prolonged wet, cold exposure and tends to show swelling and skin breakdown from extended immersion rather than episodic damp cold leading to late-onset inflammatory lesions.

Chillblains (perniosis) are a nonfreezing cold injury caused by repeated exposure to damp, cold conditions. The skin of exposed areas such as the ears, fingers, and toes becomes inflamed after warming, with edema, erythema, and a cyanotic hue that can appear up to several hours after the cold exposure ends. The underlying issue is an abnormal vasomotor response to cold-damp environments, leading to vascular congestion and inflammation when warming resumes. This distinguishes it from frostbite, which involves tissue freezing and presents with numbness, pale or mottled skin, and potential tissue necrosis during freezing temperatures; frostnip, a milder superficial freezing injury, causes numbness with minimal skin change and resolves with warming. Trench foot stems from prolonged wet, cold exposure and tends to show swelling and skin breakdown from extended immersion rather than episodic damp cold leading to late-onset inflammatory lesions.