Demodex, demodicosis - DermNet
2016年12月28日 · In humans, demodex is found on facial skin, especially the forehead, cheeks, sides of the nose, eyelashes and external ear canals. It sometimes causes a condition called demodicosis. There are two mites principally involved in human demodex infestations, Demodex folliculorum and Demodex brevis.
Demodicosis pathology - DermNet
Demodicosis is caused by two species of follicular mites, Demodex folliculorum and Demodex brevis, which are normal inhabitants of human skin. Although the mites are ubiquitous on sebaceous-rich skin, they sometimes cause dermal reaction and consequent erythema, pustules, and inflammatory plaques. Histology of demodicosis
demodex image - DermNet
Demodex is the name given to tiny mites that live in the hair follicle. In humans, demodex is found on facial skin, especially the forehead, cheeks, sides of the nose, eyelashes and external ear canals.
Scalp folliculitis - DermNet
Mites (Demodex folliculorum) What is the treatment for scalp folliculitis? The scalp affected by folliculitis should be washed with a mild normal shampoo as often as desired. Antidandruff shampoos containing antifungal agents such as ketoconazole or ciclopirox are sometimes helpful. Conditioner can be used if desired.
Neutrophilic sebaceous adenitis - DermNet
Neutrophilic sebaceous adenitis is a rare inflammatory dermatosis that most commonly affects the face and torso of young men. It is a form of sebaceous adenitis and is characterised by annular or arcuate plaques on the face and trunk, which on biopsy show a mononuclear infiltrate around blood vessels and follicles , in addition to revealing ...
Microorganisms found on the skin - DermNet
Bacterial species are by far the most numerous; however fungi, viruses and mites are also found on the skin of normal healthy humans. Resident microorganisms. Resident microbiota are found in the upper parts of the epidermis and congregated in and around the hair follicles. They include: Staphylococcus (see coagulase negative staphylococci ...
Ivermectin - DermNet
Ivermectin cream has been shown to reduce papulopustular rosacea, which is thought to be due to its effects on demodex mites and its anti-inflammatory action. A 2021 Cochrane Review has not found sufficient evidence to support the use of ivermectin for preventing or treating COVID-19.
Folliculitis - DermNet
Folliculitis on the face or scalp of older or immunosuppressed adults may be due to colonisation by hair follicle mites (demodex). This is known as demodicosis. The human infestation, scabies, often provokes folliculitis, as well as non-follicular papules, vesicles and pustules. Folliculitis due to irritation from regrowing hairs
Rosacea: Symptoms, Causes, and Management - DermNet
Rosacea is a chronic inflammatory skin condition predominantly affecting the central face and most often starts between the age of 30–60 years. Rosacea is common and is characterised by persistent facial redness. It typically has a relapsing and remitting course, with symptoms controlled by lifestyle measures, general skin care, medications ...
Steroid rosacea - DermNet
Proliferaton of hair follicle mites, demodex (demodicosis) Proliferation of other micro-organisms in the skin; New blood vessel formation and rebound vasodilation; Innate immune reaction with inflammatory cytokine release; Steroid rosacea tends to be more likely to occur and more severe when strong steroids have been applied to facial skin.