Tuberculid

Tuberculid is a type of cutaneous condition that is associated with tuberculosis. It is characterized by a variety of skin manifestations that occur due to an immune response to Mycobacterium tuberculosis in individuals who have a moderate to high degree of tuberculin sensitivity.

Classification

Tuberculids are classified into three main types: Papulonecrotic tuberculid, Lichen scrofulosorum, and Erythema induratum.

Papulonecrotic tuberculid

Papulonecrotic tuberculid is a chronic, recurrent, symmetrical eruption of necrotizing skin papules that heal with varioliform scarring. It is often associated with a positive tuberculin skin test.

Lichen scrofulosorum

Lichen scrofulosorum is a tuberculid that presents as a lichenoid eruption of minute papules in children and adolescents with tuberculosis. The lesions are usually asymptomatic and are located on the trunk, buttocks, and proximal extremities.

Erythema induratum

Erythema induratum, also known as Bazin's disease, is a tuberculid that is associated with subcutaneous nodules and plaques on the lower legs of women. It is often associated with a positive tuberculin skin test.

Diagnosis

The diagnosis of tuberculid is based on the clinical presentation, histopathological findings, and response to antituberculous therapy. The histopathological findings vary depending on the type of tuberculid. A positive tuberculin skin test and evidence of tuberculosis elsewhere in the body can also support the diagnosis.

Treatment

The treatment of tuberculid involves the use of antituberculous therapy. This can lead to the resolution of skin lesions and prevent the recurrence of the disease.

See also

• List of cutaneous conditions
• Tuberculosis

References

Tuberculid Resources
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