What Is an Annular Lesion

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 does an annular lesion look like?

The term annular is derived from the Latin word “annulus,” meaning ring shaped. These lesions have a characteristic appearance, described as round to oval-shaped patches or plaques with central clearing.

What causes annular rashes?

Often no specific cause for the annular erythema is found. However, it has been noted that annular erythema is sometimes linked to underlying diseases and conditions. These include: Bacterial, fungal and viral infections such as tuberculosis, secondary syphilis, sinusitis, candidiasis or tinea.