How can you tell when you have become infested with lice? - briefly
Persistent scalp itching, especially after washing, and the discovery of tiny white or brown nits affixed within a quarter‑inch of the hair roots signal a lice problem. Seeing live lice moving on the hair or scalp confirms the infestation.
How can you tell when you have become infested with lice? - in detail
Lice infestations become apparent through a combination of visual cues, tactile sensations, and secondary symptoms. Recognizing these indicators early prevents prolonged discomfort and reduces the risk of spreading the parasites.
Visible evidence appears on the scalp or hair shafts. Live insects are about the size of a sesame seed, grayish‑brown, and move quickly when disturbed. Nits—unhatched eggs—are oval, about 0.8 mm long, and adhere firmly to the base of each hair strand. Unlike dandruff, nits cannot be brushed away and are often found within a half‑inch of the scalp, where they appear white or yellowish. A cluster of several nits grouped together is a strong sign of an active infestation.
Physical sensations provide additional confirmation. An itchy scalp, especially after a period of stillness, results from the saliva of the insects irritating the skin. The itch may intensify in the evenings and can be accompanied by a tingling or crawling feeling. Repeated scratching can lead to small abrasions or redness, which may become infected if left untreated.
Secondary signs emerge as the infestation persists. These include:
- Small, red bumps or sores on the neck, ears, or shoulders caused by scratching.
- Swollen lymph nodes in the neck due to ongoing irritation.
- Unexplained fatigue or irritability, particularly in children, linked to sleep disturbance from itching.
To verify an infestation, conduct a systematic inspection. Part the hair in sections of about two inches, using a fine‑toothed lice comb on a well‑lit surface. Examine each strand for live insects, nits, or empty egg shells. If any are found, repeat the process after a few days to ensure that newly hatched lice are not missed.
In summary, the presence of moving insects, firmly attached eggs near the scalp, persistent itching, and related skin irritation collectively indicate a lice problem. Prompt detection through careful visual inspection and symptom assessment enables effective treatment before the condition spreads.