Commonly involved sites of rashes of<unk>  The characteristic symptoms of a<unk>  infection include intense itching and superficial burrows. Because the host develops the symptoms as a reaction to the mites' presence over time, typically a delay of four to six weeks occurs between the onset of infestation and the onset of itching. Similarly, symptoms often persist for one to several weeks after successful eradication of the mites. As noted, those re-exposed to<unk>  after successful treatment may exhibit symptoms of the new infestation in a much shorter period—as little as one to four days. Itching In the classic scenario, the itch is made worse by warmth, and is usually experienced as being worse at night, possibly because distractions are fewer. As a symptom, it is less common in the elderly. Rash The superficial burrows of<unk>  usually occur in the area of the finger webs, feet, ventral wrists, elbows, back, buttocks, and external genitals. Except in infants and the immunosuppressed, infection generally does not occur in the skin of the face or scalp. The burrows are created by excavation of the adult mite in the epidermis. Acropustulosis, or blisters and pustules on the palms and soles of the feet, are characteristic symptoms of<unk>  in infants. File:Acarodermatitis Fuß.Scabies of the foot File:Acarodermatitis Arm.Scabies of the arm File:Acarodermatitis Hand.Scabies of the hand File:Acarodermatitis Finger.Scabies of the finger In most people, the trails of the burrowing mites are linear or S-shaped tracks in the skin often accompanied by rows of small, pimple-like mosquito or insect bites. These signs are often found in crevices of the body, such as on the webs of fingers and toes, around the genital area, in stomach folds of the skin, and under the breasts of women. Symptoms typically appear two to six weeks after infestation for individuals never before exposed to<unk> . For those having been previously exposed, the symptoms can appear within several days after infestation. However, symptoms may appear after several months or years. Crusted<unk>  Crusted<unk>  in a person with AIDS The elderly, disabled, and people with impaired immune systems, such as those with HIV/AIDS, cancer, or those on immunosuppressive medications, are susceptible to crusted<unk>  (also called Norwegian<unk> . On those with weaker immune systems, the host becomes a more fertile breeding ground for the mites, which spread over the host's body, except the face. The mites in crusted<unk>  are not more virulent than in noncrusted<unk> ; however, they are much more numerous (up to two million). People with crusted<unk>  exhibit scaly rashes, slight itching, and thick crusts of skin that contain large numbers of<unk>  mites. For this reason, persons with crusted<unk>  are more contagious to others than those with typical<unk> . Such areas make eradication of mites particularly difficult, as the crusts protect the mites from topical miticides/scabicides, necessitating prolonged treatment of these areas.
Scabies
Pediculosis
Pulicosis
Dermatitis herpetiformis
Polymeal
Atopic dermatitis
Malaise
Seborrhoeic dermatitis