Diphtheria: Cutaneous Forms – Clinician Action Needed
- As of November 13, 2025, healthcare professionals are urged too heighten awareness of diphtheria, notably its less common but increasingly reported cutaneous (skin) manifestations.
- Diphtheria is caused by the bacterium Corynebacterium diphtheriae, and infection occurs through respiratory droplets or skin contact. The cutaneous form, while not new, is gaining prominence.
- Several factors may contribute to the increase in cutaneous diphtheria.
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DiphtheriaS Unexpected Return: Recognizing Cutaneous Infections
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As of November 13, 2025, healthcare professionals are urged too heighten awareness of diphtheria, notably its less common but increasingly reported cutaneous (skin) manifestations. While traditionally known as a severe respiratory illness, diphtheria is now presenting in new ways, demanding a broader clinical understanding to ensure timely diagnosis and treatment.
The Changing Face of Diphtheria
Diphtheria is caused by the bacterium Corynebacterium diphtheriae, and infection occurs through respiratory droplets or skin contact. The cutaneous form, while not new, is gaining prominence. According to recent reports, a substantial proportion of cases-particularly those observed in urban centers-are now presenting as non-healing ulcers or lesions on the skin. These lesions can sometimes be mistaken for other conditions,leading to delayed diagnosis.
Why the Rise in Cutaneous Cases?
Several factors may contribute to the increase in cutaneous diphtheria. These include decreased vaccination rates in certain populations,increased rates of homelessness and skin conditions that compromise the skin barrier,and potential changes in the virulence of the bacteria. The Centers for Disease Control and prevention (CDC) emphasizes the importance of maintaining high vaccination coverage to prevent diphtheria outbreaks.Learn more about diphtheria prevention from the CDC.
Early recognition of atypical presentations is crucial for effective management and preventing complications.
Diagnosis and Treatment
Diagnosing cutaneous diphtheria requires a high index of suspicion and laboratory confirmation. A swab of the lesion is necessary for culture to identify Corynebacterium diphtheriae. Treatment involves administering diphtheria antitoxin, along with antibiotics, such as penicillin or erythromycin.Prompt treatment is essential to neutralize the toxin produced by the bacteria and prevent systemic complications, including myocarditis and neuropathy.
| Symptom | Cutaneous Diphtheria | Respiratory Diphtheria |
|---|---|---|
| Primary Presentation | Non-healing skin ulcer or lesion | Sore throat,fever,swollen glands |
| Pseudomembrane | May be present,but less prominent | Thick covering in the back of the throat |
| Common Populations Affected | Individuals experiencing homelessness,those with skin conditions | Unvaccinated or under-vaccinated children |
Public Health Implications
The emergence of cutaneous diphtheria highlights the need for enhanced surveillance and public health initiatives. Clinicians should report suspected cases to local health departments immediately. Public health officials are working to improve access to vaccination and provide education about the signs and symptoms of diphtheria, particularly among vulnerable populations. The World Health Organization (WHO) provides global updates on diphtheria outbreaks and vaccination efforts. Find more information on diphtheria from the WHO.
“continued vigilance and a proactive approach to vaccination are essential to protect communities from the resurgence of this preventable disease.”
the re-emergence of diphtheria, in its cutaneous form, serves as a critical reminder of the importance of staying informed about evolving infectious disease patterns and maintaining a high level of clinical suspicion. Early diagnosis and treatment remain the cornerstones of effective management and preventing the possibly life-threatening complications associated with this disease.
“Data visualization showing the increase in cutaneous diphtheria cases over