Demodex is a genus of tiny mites that live in or near hair follicles of mammals. Around 65 species of Demodex are known. Two species live on humans: Demodex folliculorum and Demodex brevis, both frequently referred to as eyelash mites. Different species of animals host different species of Demodex. Demodex canis lives on the domestic dog. Infestation with Demodex is common and usually does not cause any symptoms, although occasionally some skin diseases can be caused by the mites. Demodex is derived from Greek δημός dēmos "fat" and δήξ dēx, "woodworm".
Demodex miteDemodex canisDemodex caprae
demodectic mangedemodecticDemodex Mange
Demodicosis may also cause itching, swelling, and erythema of the eyelid margins. Scales at the base of the eyelashes may develop. Typically, patients complain of eyestrain. Minor cases of demodectic mange usually do not cause much itching but might cause pustules, redness, scaling, leathery skin, hair loss, skin that is warm to the touch, or any combination of these. It most commonly appears first on the face, around the eyes, or at the corners of the mouth, and on the forelimbs and paws. It may be misdiagnosed as a "hot spot" or other skin ailment.
In medicine, a disease is considered asymptomatic if a patient is a carrier for a disease or infection but experiences no symptoms. A condition might be asymptomatic if it fails to show the noticeable symptoms with which it is usually associated. Asymptomatic infections are also called subclinical infections. Other diseases (such as mental illnesses) might be considered subclinical if they present some but not all of the symptoms required for a clinical diagnosis. The term clinically silent is also used.
basal cell carcinomabasal cell cancerrodent ulcer
The following methods are employed in the treatment of basal-cell carcinoma (BCC): A weakness with standard surgical excision is a reported higher recurrence rate of basal-cell cancers of the face, especially around the eyelids, nose, and facial structures. There is no clear approach for treating basal-cell carcinoma around the eye. A diagram on page 38 of the National Comprehensive Cancer Network publication demonstrate the area of high risk of recurrence as being most of the face with the exception of the central cheek and upper forehead.
In biology, tissue is a cellular organisational level between cells and a complete organ. A tissue is an ensemble of similar cells and their extracellular matrix from the same origin that together carry out a specific function. Organs are then formed by the functional grouping together of multiple tissues.
The Caucasian race (also Caucasoid or Europid) is a grouping of human beings historically regarded as a biological taxon, which, depending on which of the historical race classifications is used, has usually included ancient and modern populations from Europe, Western Asia, Central Asia, South Asia, North Africa, and the Horn of Africa.
KoreanKorean PeninsulaSouth Korea
Korea is a region in East Asia consisting of the Korean Peninsula, Jeju Island, and several minor islands near the peninsula. Korea has been divided since 1948 between two distinct sovereign states, North Korea and South Korea. Korea is bordered by Russia to the northeast, China to the northwest, and neighbours Japan to the east via the Korea Strait and the Sea of Japan (East Sea).
A cadaver is a dead human body that is used by medical students, physicians and other scientists to study anatomy, identify disease sites, determine causes of death, and provide tissue to repair a defect in a living human being. Students in medical school study and dissect cadavers as a part of their education. Others who study cadavers include archaeologists and artists.