Head lice - Symptoms & causes - Mayo Clinic
Dec 16, 2025 · Head lice are tiny insects that feed on human blood, most often from the scalp. These insects are found worldwide. Head lice infect hair of any length and type. In the United States, head …
Lice - Symptoms and causes - Mayo Clinic
Oct 14, 2025 · Causes Lice are insects that feed on human blood. They live on the human head, body and pubic area. You get lice by coming into contact either with lice or their eggs. For head lice, …
Head lice - Diagnosis & treatment - Mayo Clinic
Dec 16, 2025 · Diagnosis To diagnose a head lice infestation, you or a healthcare professional look for lice at any stage of the life cycle. Young lice or adults may be seen or collected with a comb. The fine …
Lice - Diagnosis and treatment - Mayo Clinic
Oct 14, 2025 · Pubic lice A healthcare professional may diagnose pubic lice after seeing moving lice or nits on hair in the pubic area or on other areas of coarse hair, such as chest hair, eyebrows or …
Why is my head itchy? How to soothe and solve an itchy scalp
Apr 28, 2025 · When you see your kid scratching their head, your gut instinct might be to grab head lice shampoo. But itching can mean tons of things, ranging from the superficial to the serious. So how do …
Mayo Clinic Q and A: Getting rid of head lice
Jul 29, 2017 · Head lice tend to stay within about one inch of the scalp, anchoring onto a hair shaft. If you suspect that you or a family member has head lice, first look behind the ears and along the back …
Pubic lice (crabs) - Symptoms & causes - Mayo Clinic
Dec 18, 2025 · Pubic lice, also called crabs, are tiny insects that get into the genital area. They are different from head lice and body lice. Measuring 1/16 inch (1.6 millimeters) or less, pubic lice are …
Body lice - Symptoms & causes - Mayo Clinic
Dec 17, 2025 · The lice can spread through contact with the clothes or bedding of someone who has lice. Body lice can spread diseases. Clothing and bedding that have body lice in them need to be …
Head lice - Symptoms & causes - Mayo Clinic
Head lice are tiny insects that feed on blood from the human scalp. Head lice most often affect children. The insects usually spread through direct transfer from the hair of one person to the hair of another. …
Permethrin (topical route) - Side effects & dosage - Mayo Clinic
Feb 1, 2025 · Permethrin lotion which is used to treat lice, comes in a container that holds only one treatment. Use as much of the medicine as you need and discard any remaining lotion properly. For …