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Lice
About Lice
Lice are tiny, wingless parasitic insects that feed on human blood. They commonly live on the scalp, body, or pubic area, causing itching and irritation.
Common Symptoms
- Intense itching on the scalp, body, or pubic area
- Feeling of something crawling on the skin
- Sores on the scalp, neck, or shoulders from scratching
- Small red bumps on the scalp, neck, and shoulders
- Tiny white specks (nits or lice eggs) attached to the base of hair shafts
Diagnosis
Lice are typically diagnosed by visually examining the hair and scalp for live lice or nits. A fine-toothed comb may be used to help identify them. Magnification can assist in confirming the presence of these tiny insects or their eggs.
Causes
Lice infestations are primarily caused by close contact with an infested person. This can include head-to-head contact, sharing personal items like hats or brushes, or using infested bedding or towels.
Treatment Overview
Treatment approaches for lice typically involve over-the-counter or prescription medications designed to kill lice and nits. These may come in the form of shampoos, topical lotions, or oral medications. Additionally, complementary approaches sometimes discussed include using essential oils or suffocation methods, though their efficacy can vary and is not universally accepted in conventional medicine.
Prognosis & Outlook
The prognosis for lice infestations is generally very good, as they are usually treatable with appropriate interventions. With consistent treatment and preventive measures, most individuals can successfully eradicate lice.
Types & Variants
Head Lice (Pediculus humanus capitis)
Found on the scalp, neck, and behind the ears. Nits are attached to the hair shaft.
Body Lice (Pediculus humanus corporis)
Live in clothing and bedding and move to the skin to feed. Often associated with people who cannot bathe or launder clothes regularly.
Pubic Lice (Pthirus pubis)
Also called 'crabs,' these lice occur on the skin and hair of the pubic area and are usually spread through sexual contact.
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