Case presentation :
A 45-year-old male patient presented with a lesion of the scalp appearing 10 days after a SARS-COV-2 infection. The skin examination found many firm and erythematous papules on a background of a diffuse erythema associated with hair thinning. Skin biopsy revealed excessive Demodex mites in the follicular infundibulum with perivascular and perifollicular lymphocytic infiltration. Based on the clinical and histopathological data, the diagnosis of scalp demodecidosis was retained. The patient was treated with topical metronidazole, achieving a complete regression of the lesions.