A case of unilateral demodicidosis

Demodex folliculorum is an obligate parasite of the human pilosebaceous follicle. Its etiological role of several skin diseases, such as rosacea, perioral dermatitis, and blepharoconjunctivitis, has been described in the dermatologic literature. A 39-year-old woman presented with erythematous, scaly, papulopustular eruption on the right side of her face. Many Demodex mites, were found in the follicles of the affected area. The diagnosis of unilateral demodicidosis was established. Demodicidosis can present with a unilateral distribution, therefore, it should carefully be considered against the differential diagnosis of unilateral follicular skin lesions of the face.