Cutaneous blisters and carbon monoxide poisoning

Area of Science:

• Toxicology
• Dermatology
• Emergency Medicine

Background:

• Carbon monoxide (CO) poisoning is a significant public health concern.
• Skin manifestations of CO poisoning are infrequently reported.
• Understanding CO toxicity is crucial for effective patient management.

Observation:

• Three patients presented with characteristic skin blisters after carbon monoxide exposure.
• Blister formation correlated with high carboxyhemoglobin (HbCO) levels, exceeding 40%.
• Two patients experienced fatal outcomes despite intensive oxygen and hyperbaric treatments.

Findings:

• The exact mechanism causing CO poisoning-induced skin blisters is not fully understood.
• Potential causes include pressure necrosis or a combination of pressure and direct CO effects on cellular respiration.
• Skin blisters in CO poisoning cases may indicate severe toxicity.

Implications:

• Physicians should consider CO poisoning in patients with unexplained skin blisters.
• Recognizing this sign can lead to earlier diagnosis and intervention for severe CO poisoning.
• Further research is needed to elucidate the pathophysiology of CO-induced skin lesions.