Cutaneous diphtheria infection

Cutaneous diphtheria infection is a bacterial infection caused by Corynebacterium diphtheriae that affects the skin. Unlike respiratory diphtheria, which affects the throat and respiratory system, cutaneous diphtheria primarily involves the epidermis and dermis layers of the skin.

Signs and Symptoms

The symptoms of cutaneous diphtheria include:

• Ulcers with a dirty gray membrane
• Erythema (redness of the skin)
• Swelling
• Pain at the site of infection

These symptoms typically appear on exposed areas of the body such as the hands, legs, and feet.

Transmission

Cutaneous diphtheria is transmitted through direct contact with infected wounds or lesions. It can also spread via contact with contaminated objects or surfaces. The bacteria can enter the skin through cuts, abrasions, or other breaks in the skin.

Diagnosis

Diagnosis of cutaneous diphtheria is confirmed through bacterial culture and polymerase chain reaction (PCR) testing of samples taken from the infected skin lesions. Clinical diagnosis is often supported by the characteristic appearance of the ulcers and the presence of a pseudomembrane.

Treatment

Treatment involves the administration of antibiotics such as penicillin or erythromycin. In addition, diphtheria antitoxin may be administered to neutralize the effects of the toxin produced by the bacteria. Proper wound care and hygiene are also essential to prevent secondary infections.

Prevention

Preventive measures include:

• Vaccination with the diphtheria toxoid vaccine
• Maintaining good hygiene
• Prompt treatment of skin injuries to prevent infection

Complications

If left untreated, cutaneous diphtheria can lead to severe complications such as:

• Systemic infection
• Sepsis
• Toxin-mediated complications affecting the heart and nervous system

Epidemiology

Cutaneous diphtheria is more common in tropical and subtropical regions. It is also seen in areas with poor sanitation and crowded living conditions. Outbreaks can occur in settings such as refugee camps and among homeless populations.

See Also

• Diphtheria
• Corynebacterium diphtheriae
• Bacterial skin infections
• Vaccination