Head lice - Symptoms & causes - Mayo Clinic
2022年4月30日 · The most common symptom of head lice is itching on the scalp, neck and ears. This is an allergic reaction to louse bites. When a person has head lice for the first time, itching may not occur for 4 to 6 weeks.
Lice - Symptoms and causes - Mayo Clinic
2022年6月30日 · Head lice. Head lice occur on the scalp and are easiest to see at the nape of the neck and over the ears. Small nits (eggs) resembling tiny pussy willow buds about the size of dandruff flakes are visible on hair shafts.
Head lice - Diagnosis & treatment - Mayo Clinic
2022年4月30日 · According to the American Academy of Pediatrics guidelines, the gold standard for diagnosing head lice is to identify a live nymph or adult louse. The guidelines recommend examining wet hair lubricated with hair conditioner or another product.
Lice - Diagnosis and treatment - Mayo Clinic
2022年6月30日 · Head lice. A health care provider may diagnose head lice after finding a live young or adult louse in the person's hair or on the scalp, or after seeing one or more nits on hair shafts found within 1/4 inch (6 millimeters) of the scalp.
The itchy truth: What to know about head lice - Mayo Clinic Press
2022年1月6日 · Intense itching on the scalp and neck could indicate the presence of head lice. Sensations of something crawling or moving in the hair also could be a sign of head lice. To determine if head lice are present, look for signs of nits attached to the hair shaft.
Permethrin (topical route) - Mayo Clinic
For head lice: Adults and children 2 years of age and older—Apply to the hair and scalp one time. Children up to 2 years of age—Use and dose must be determined by your doctor.
Mayo Clinic Q and A: Getting rid of head lice
2017年7月29日 · Head lice are tiny, wingless, parasitic insects that live and feed on blood from a person’s scalp. Head lice cause a lot of fear and anxiety. Fortunately, although they are a nuisance, head lice don’t carry any transmissible diseases that are dangerous.
Ringworm (scalp) - Symptoms & causes - Mayo Clinic
2022年1月22日 · Ringworm of the scalp (tinea capitis) is a rash caused by a fungal infection. It usually causes itchy, scaly, bald patches on the head. Ringworm gets its name because of its circular appearance. No worm is involved.
Body lice - Symptoms & causes - Mayo Clinic
2022年11月16日 · While head lice live in your hair and feed on your scalp, body lice usually live in your clothes and bedding. They travel to your skin several times a day to feed on blood. Your clothing seams are the most common places for body lice to lay their eggs (nits).
Seborrheic dermatitis - Symptoms and causes - Mayo Clinic
2024年7月19日 · Seborrheic (seb-o-REE-ik) dermatitis is a common skin condition that mainly affects your scalp. It causes scaly patches, inflamed skin and stubborn dandruff. It usually affects oily areas of the body, such as the face, sides of the nose, eyebrows, ears, eyelids and chest.