What causes annular lesions?

What causes annular lesions?

Diseases That Can Cause Annular Lesions Lichen planus. Pityriasis rosea. Plaque psoriasis. Tinea corporis.

What are polycyclic lesions?

Polycyclic lesions present as configurations arranged in more than one ring. Some annular lesions may coalesce into a polycyclic shape; alternatively, the appearance of such lesions may be independent. For example, the annular lesions of tinea corporis can combine to create a polycyclic lesion.

What does annular mean in dermatology?

DEFINITION. Annular skin lesions are figurate lesions characterized by a ring-like morphology. Although plaques represent the most common presentation of annular lesions, lesions may also be macular, nodular, or composed of grouped papules, vesicles, or pustules.

What are linear lesions?

The lesions are striae (‘stretch marks’), linear scar-like lesions that form in areas of dermal damage where the skin has been stretched. When they first develop, striae are usually erythematous and sometimes irritable and raised, but over time the scars fade and become white.

How is annular erythema treated?

Annular erythema usually clears up by itself. Eruptions may last for a few weeks to many years (the average duration is 11 months). Most cases of annular erythema require no treatment (and no curative therapy is known). However, topical corticosteroids may be helpful in reducing redness, swelling and itchiness.