Extensive tinea in a patient with severe combined immunodeficiency

Area of Science:

• Immunology
• Genetics
• Dermatology

Background:

• Severe combined immunodeficiency (SCID) comprises a group of genetic disorders impairing T and B cell immunity.
• While X-linked recessive SCID is most prevalent, autosomal recessive forms and spontaneous mutations also occur.
• SCID patients commonly experience nosocomial infections, but dermatophyte infections are infrequent.

Observation:

• A case of SCID presented with a rare and extensive skin infection.
• The infection was caused by the dermatophyte species *Trichophyton mentagrophytes*.
• This presentation is atypical for known SCID manifestations.

Findings:

• The study details a specific case linking SCID to a widespread *Trichophyton mentagrophytes* infection.
• This association expands the spectrum of opportunistic infections observed in SCID patients.
• The genetic basis of SCID underlies the compromised immune response.

Implications:

• Recognizing this atypical presentation can aid in earlier diagnosis of SCID.
• Understanding SCID-associated infections is crucial for patient management and treatment strategies.
• Further research may elucidate the specific immune defects predisposing SCID patients to dermatophyte infections.