DIFFERENTIAL DIAGNOSIS OF ANNULAR SKIN LESIONS - A CLINICAL REVIEW.

Annular lesions are a peculiar type of presentation of various skin disorders. The primary efflorescence can be either macule, papule, plaque, urticaria or vesicle. Depending on the primary efflorescence involved, the differential diagnoses can be delimited. It is important to identify secondary features such as scaling and discolorations. Additional symptoms may include pruritus, burning sensations or hypoesthesia. Depending on the clinical findings and medical history, confirmation of suspected working diagnosis is achieved by laboratory work-up, including histology and microbiology (mycology) studies.