How can I recognize lice on my own head? - briefly
Examine the scalp and hair for tiny, oval, gray‑brown insects approximately the size of a sesame seed. Also inspect for translucent eggs (nits) firmly attached near the hair shaft, particularly behind the ears and at the nape of the neck.
How can I recognize lice on my own head? - in detail
Detecting head‑lice infestation requires careful visual inspection of the scalp and hair. The adult insect measures 2–4 mm, has a flattened body, and moves quickly. Nits (lice eggs) appear as tiny, oval, whitish or yellowish objects attached firmly to hair shafts, typically within 1 cm of the scalp. Their heads are embedded in the hair, making them difficult to dislodge.
Key observation points:
- Scalp condition – Look for small, reddish bumps or areas of irritation, especially behind the ears, at the nape, and along the hairline.
- Presence of live insects – Adult lice are brown to gray, with six legs. They may be seen crawling slowly or jumping when the hair is disturbed.
- Nits versus dandruff – Nits are oval, smooth, and immobile. Dandruff flakes are irregular, white, and easily brushed away. Nits are attached at an angle of about 45°, whereas dandruff lies flat.
- Hair‑shaft proximity – Nits found within 1 cm of the scalp are likely viable; those farther away are usually hatched or dead.
Practical steps for self‑examination:
- Separate hair – Part the hair into small sections using a fine‑toothed comb or a nit‑comb. Work from the front to the back, ensuring each strand is examined.
- Use adequate lighting – A bright, natural light source or a magnifying lamp improves visibility of tiny organisms and eggs.
- Inspect each section – Hold the hair close to the scalp and look for the characteristic oval nits attached at an angle. Move the comb slowly to detect any crawling lice.
- Check multiple areas – Repeat the process behind the ears, at the nape, and along the hairline, as these zones provide optimal conditions for lice habitation.
- Document findings – If any live insects or viable nits are observed, note their location for targeted treatment.
If no lice or nits are identified after a thorough examination, the risk of infestation is low. However, repeat the inspection after 7–10 days, as newly hatched nymphs may become visible only after this period. Continuous monitoring is essential in environments where close contact is common.