What are head lice?
Lice are troublesome, but harmless.
Head Lice are insects that live in human hair and feed on human blood.
- You are most likely to find them behind the ears, around the nape of the neck and at the temples.
- They cannot jump or fly, but they have strong claws. If two children's heads are very close together, the lice can move from one to the other. An adult louse can cover 23cm in a minute.
- A louse lives for about 50 days (seven weeks).
The eggs or empty egg cases of head lice are called nits.
- Eggs (nits) are about the size of a grain of sand, and are white or brownish in colour.
- Eggs (nits) stick very firmly to the hair shaft and can be very difficult to remove.
Newly hatched lice are called nymphs. Female lice start laying eggs when they are about three weeks old.
NYDA is an effective, safe medicine to remove head lice from hair of children.
For references indicated with superscript, digits or asterisks, please click here: References