Targetoid

Targetoid is a term used in dermatology to describe a skin lesion that has a target-like appearance. This can be seen in a variety of conditions, including erythema multiforme, Lyme disease, and herpes simplex virus infection.

Etiology

Targetoid lesions can be caused by a variety of conditions. These include:

• Erythema multiforme: This is a skin condition that can cause targetoid lesions. It is often triggered by an infection or medication.
• Lyme disease: This is a bacterial infection that can cause a variety of symptoms, including targetoid lesions.
• Herpes simplex virus infection: This is a viral infection that can cause targetoid lesions.

Clinical Presentation

Targetoid lesions typically present as round, red patches on the skin. They often have a darker red or purple center, surrounded by a lighter ring, and then another darker ring on the outside. This gives them a target-like appearance.

Diagnosis

The diagnosis of a targetoid lesion is typically made based on the clinical presentation. In some cases, a skin biopsy may be performed to confirm the diagnosis.

Treatment

The treatment of targetoid lesions depends on the underlying cause. For example, erythema multiforme may be treated with corticosteroids, while Lyme disease is typically treated with antibiotics.

See Also

• Dermatology
• Erythema multiforme
• Lyme disease
• Herpes simplex virus

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