How Long Do You Have Head Lice Before You Notice an Infection?

If you suspect you have head lice, the best way to treat yourself is to wash your linens and clothing in hot water and dry them on a high heat. Once you’re done, keep these items sealed in a plastic bag for a week or so. You can also boil hair brushes and combs for ten minutes. This will kill any remaining lice.

Lice multiply slowly, which is why it can take two to four weeks for you to notice an infestation. The itchiness you notice is the result of the lice’s saliva, which makes the scalp and hair feel itchy. This itchiness is the first sign of head lice, but there are other signs you can look for that may help you diagnose the infestation more quickly.

The symptoms of head lice can be hard to detect and can vary significantly. You can also confuse head lice for dandruff or dry scalp. The first symptom of head lice usually occurs four to six weeks after the initial infection. Because head lice are so small and unable to see, the infection can go unnoticed for that long.

The most important thing to do is get treated as soon as you notice symptoms. The lice eggs are visible for about five days after they’re laid. If you find the eggs, treatment will be easier.