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Sporotrichoid cutaneous tuberculosis.

V Ramesh¹

¹Department of Dermatology and STD, Safdarjang Hospital and V.M.Medical College, New Delhi, India. weramesh@hotmail.com

Clinical and Experimental Dermatology

|August 24, 2007

Summary

This study describes three cases of sporotrichoid cutaneous tuberculosis in children and young adults. Diagnosis relied on clinical signs, tuberculin tests, and histopathology, with successful treatment using anti-tubercular therapy.

Area of Science:

Dermatology
Infectious Diseases
Mycobacteriology

Background:

Cutaneous tuberculosis presents with diverse clinical manifestations.
Sporotrichoid spread is typically associated with less pathogenic mycobacteria.
Understanding rare presentations aids in accurate diagnosis and treatment.

Observation:

Three cases of sporotrichoid cutaneous tuberculosis are presented: two with lupus vulgaris on lower limbs and one with scrofuloderma on an arm.
Mycobacterial cultures were negative in all cases.
Diagnosis was established through clinical presentation, positive tuberculin skin tests, and characteristic histopathological findings.

Findings:

The sporotrichoid pattern in scrofuloderma mimicked sporotrichosis more closely than in lupus vulgaris.

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Histopathology revealed granulomatous dermatitis consistent with tuberculosis.

All patients responded well to Directly Observed Treatment, Short-course (DOTS) anti-tubercular therapy.

Implications:

Sporotrichoid cutaneous tuberculosis can occur even with negative mycobacterial cultures.
The presentation is more common in children and adolescents, possibly due to lymphatic drainage and physical activity.
This highlights the importance of considering tuberculosis in differential diagnoses for sporotrichoid skin lesions, especially in younger populations.