: The worst enemies are the ones that used to be friends.

mites are common ectoparasites of the human pilosebaceous units. Most adults are infested with mites without clinical symptoms. mite will only become a pathogenic organism when there is an abnormal increase in the number of mite density. This situation happens when the equilibrium between mites, skin microenvironment and human immunity system changes. infestation can cause multiple skin disorders, which are grouped under the term demodicosis or demodicidosis. Clinical manifestations of demodicosis can mimic other known skin diseases such as folliculitis, rosacea, perioral dermatitis, which is why it is often misdiagnosed. Diagnosis criteria consists of relevant correlation of suspected clinical skin lesions, confirmed by the presence of abnormal proliferation of mites and by clinical cure after acaricidal treatment together with normalization of mite density. Dermatologists should be aware that demodicosis is not an uncommon skin disease, and there are still many unknowns about it that should be researched further.