PURPOSE To determine the active ingredient in tea tree oil (TTO) responsible for its reported killing effect on Demodex mites, the most common ectoparasite found in the human skin extending to the eye. METHODS Using a reported in vitro killing assay to measure the survival time of adult Demodex folliculorum up to 150 minutes, we have screened serial concentrations of 13 of the 15 known ingred...

A 60-year-old man presented with a plaque lesion on the upper right half of the face, which had developed after ophthalmic varicella zoster infection about 2 years previously. The lesion, which was burning and itchy, included a few tiny erythematous pustules, and was slightly squamous and infiltrated. The lesion covered the upper two-thirds of the right trigeminal nerve dermatome, involving hal...

The follicle mite, Demodex folliculorum, lives in the follicles and sebaceous glands of human skin. In fact, D. folliculorum is one of the most common permanent ectoparasites of humans. Despite their prevalence in the human population, little is actually known about these mites. The Palopoli lab has begun to study variation in the mitochondrial genome of D. folliculorum. Last semester, in the p...

BACKGROUND Background: Demodex mites are acari that reside in the pilosebaceous unit of the skin and have been associated with skin disorders. OBJECTIVE The objective of this study was to investigate the prevalence of Demodex folliculorum (D. folliculorum) mites in polycystic ovary syndrome patients as well as to examine the relationship between Demodex infestation and the presence of acne an...

A cross-sectional study was carried out to determine the prevalence and species of camel mange mite infestation in Raya-Azebo district, Northern part of Ethiopia. Accordingly, Three hundred and eighty-four camels were examined and mange mite infestation was detected on 64 of camels. Only Sarcoptes scabiei var. cameli was identified as the only mite species in all skin...

Melanocytic skin tumors are caused by nevus cells, epidermal melanocytes and dermal melanocytes. The aim of the study was to detect the positivity of Demodex spp. in biopsy specimens of skin diagnosed as nevus. In this retrospective study, the specimens obtained from 110 patients diagnosed with nevus and stained by hematoxylin & eosin (H&E) method were assessed for Demodex. Statistical analysis...

BACKGROUND Demodex mites are involved in different skin diseases and are commonly detected by skin scrape tests or superficial biopsies. A new high-definition optical coherence tomography (HD-OCT) with high lateral and axial resolution in a horizontal (en-face) and vertical (slice) imaging mode might offer the possibility of noninvasive and fast in vivo examination of demodex mites. METHODS T...

BACKGROUND Demodicosis is one of the most prevalent skin diseases resulting from infestation by Demodex mites. This parasite usually inhabits in follicular infundibulum or sebaceous duct and transmits through close contact with an infested host. METHODS This study was carried from September 2014 to January 2016 at Tehran University of Medical Sciences, Tehran, Iran. DNA extraction and amplifi...