What are the signs that you don't have lice? - briefly
No live insects, no firmly attached eggs close to the scalp, and no itching or irritation suggest the absence of lice. A professional visual inspection confirming clean hair and scalp validates that conclusion.
What are the signs that you don't have lice? - in detail
A healthy scalp that is free of head‑lice infestation shows several clear indicators.
- No live insects are visible on the hair or scalp. Adult lice are typically 2–4 mm long, brown‑gray, and move quickly; their absence is a primary sign.
- No eggs (nits) are attached to the hair shaft within a short distance of the scalp. Nits are oval, tan‑white, and firmly cemented; if a fine‑tooth comb reveals none, the likelihood of infestation is negligible.
- The scalp does not itch persistently. Lice bites cause a localized, often worsening itching that intensifies after several hours; a lack of this symptom suggests no parasites.
- No redness, inflammation, or small puncture marks are present on the skin. Irritation caused by lice feeding typically produces these signs.
- A thorough inspection of personal items—pillows, hats, hairbrushes—shows no detached lice or nits. Absence of such debris confirms that the environment is not contaminated.
- Recent close contact with individuals diagnosed with lice has not occurred. Transmission requires direct head‑to‑head contact; without recent exposure, the risk remains low.
When all these observations are consistently negative, they collectively confirm that a head‑lice problem is not present.