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Common [5] Head lice infestation, also known as pediculosis capitis, is the infection of the head hair and scalp by the head louse (Pediculus humanus capitis). [6] Itching from lice bites is common. [5] During a person's first infection, the itch may not develop for up to six weeks. [5] If a person is infected again, symptoms may begin much ...
Dandruff. Dandruff is a skin condition that mainly affects the scalp. [1] Symptoms include flaking and sometimes mild itchiness. [1][2] It can result in social or self-esteem problems. [4] A more severe form of the condition, which includes inflammation of the skin, is known as seborrhoeic dermatitis. [1] The cause is unclear, but believed to ...
Extensive tinea capitis in a Polish boy. It may appear as thickened, scaly, and sometimes boggy swellings, or as expanding raised red rings ().Common symptoms are severe itching of the scalp, dandruff, and bald patches where the fungus has rooted itself in the skin.
Pediculus humanus capitis by Des Helmore. The head louse (Pediculus humanus capitis) is an obligate ectoparasite of humans. [ 1 ] Head lice are wingless insects that spend their entire lives on the human scalp and feed exclusively on human blood. [ 1 ] Humans are the only known hosts of this specific parasite, while chimpanzees and bonobos host ...
These bumps can appear as red, pink, brown, or your skin color. They are typically hard and round, symmetrical, and anywhere from half a centimeter to two centimeters wide. Plaques might also ...
Cheyletiella. Cheyletiella is a genus of mites that live on the skin surface of dogs, [2] cats, [3] and rabbits. [4] The adult mites are about 0.385 millimeters long, have eight legs with combs instead of claws, and have palpi that end in prominent hooks. [5] They do not burrow into the skin, but live in the keratin level.
Seborrhoeic dermatitis (also spelled seborrheic dermatitis in American English) is a long-term skin disorder. [4] Symptoms include flaky, scaly, greasy, and occasionally itchy and inflamed skin. [2][3] Areas of the skin rich in oil -producing glands are often affected including the scalp, face, and chest. [4]
Pityriasis versicolor commonly causes hypopigmentation, visible in people with dark skin tones. The symptoms of this condition include: Pale, dark tan, or pink in color, with a reddish undertone that can darken when the patient is overheated, such as in a hot shower or during/after exercise. Tanning typically makes the affected areas contrast ...