Head lice - Symptoms & causes - Mayo Clinic
2022年4月30日 · Common signs and symptoms of head lice may include: Itching. 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 on scalp.
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.
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.
Body lice - Symptoms & causes - Mayo Clinic
2022年11月16日 · Body lice are similar to head lice but have different habits. 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.
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.
Pubic lice (crabs) - Symptoms & causes - Mayo Clinic
2023年1月6日 · Pubic lice, commonly called crabs, are tiny insects found in your genital area. They are a different type of louse from head lice and body lice. Measuring 1/16 inch (1.6 millimeters) or less, pubic lice received their nickname because their bodies resemble tiny crabs.
Mayo Clinic Minute: Debunking head lice myths
2023年9月1日 · September is National Head Lice Prevention Month, a time to understand the signs, importance of screenings and available treatments. Dr. Tina Ardon, a Mayo Clinic family medicine physician, debunks common myths associated with these wingless insects, which affect millions of children each school year. Watch: The Mayo Clinic Minute.
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.
Dandruff - Symptoms and causes - Mayo Clinic
2023年8月25日 · Dandruff signs and symptoms may include: Skin flakes on your scalp, hair, eyebrows, beard or mustache, and shoulders. Itchy scalp. Scaly, crusty scalp in infants with cradle cap. The signs and symptoms may be more severe if you're stressed, and they tend to flare in cold, dry seasons.