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.