Researchers are unsure where lice originated, but they know that lice have affected primates for at least 25 million years, eventually spreading to humans. Head lice only affect humans, and they will not jump onto pets or other animals. Lice can also travel on objects that have touched the head.
Head-to-head contact with an already infested person is the most common way to get head lice. Head-to-head contact is common during play at school, at home, and elsewhere (sports activities, playground, slumber parties, camp). Although uncommon, head lice can be spread by sharing clothing or belongings.
Where do head lice come from? Head lice do not come out of the air or from the ground. They are human parasites and have probably been here since the beginning of time. Desiccated (dried up) head lice and their eggs (nits) have been found on the hair and scalps of Egyptian mummies.
Most commonly, head lice are spread by direct head-to-head contact with an infested person. They may also be spread by sharing personal items such as combs, brushes, other hair-care items, towels, pillows, hats, and other head coverings.
Head lice survive less than one or two days if they fall off the scalp and cannot feed. Head lice eggs (nits) cannot hatch and usually die within a week if they do not remain under ideal conditions of heat and humidity similar to those found close to the human scalp.
Myth #2: Bad hygiene, poor grooming habits or a messy home can increase the likelihood of getting head lice. Head lice has absolutely nothing to do with personal hygiene or how clean someone's home is. In fact, washing a child's hair will not get rid of lice or nits (lice eggs), which cling to hair.
Researchers are unsure where lice originated, but they know that lice have affected primates for at least 25 million years, eventually spreading to humans. Head lice only affect humans, and they will not jump onto pets or other animals. Lice can also travel on objects that have touched the head.
Kill head lice by washing infested articles in hot water (at least 140°F) and drying in a hot dryer. Items that cannot be laundered such as headgear, earphones, and bike helmets, can be placed in a plastic bag and put in a freezer. If the freezer is 5°F or lower, all lice and eggs should be dead within 10 hours.
Coconut, tea tree oil, lavender, eucalyptus, rosemary, lemon grass, and peppermint are scents popularly believed to repel lice. Using any coconut scented shampoo and conditioner is an easy way to increase your defense. At 1% concentration, tea tree oil killed 100% of head lice after 30 minutes.
Females are usually larger than males and can lay up to 8 nits per day. Adult lice can live up to 30 days on a person's head. To live, adult lice need to feed on blood several times daily. Without blood meals, the louse will die within 1 to 2 days off the host.
While a shower may wash a few adult lice down the drain, most will be able to cling to your hair and the eggs are essentially glued in place. Lice cannot live apart from their human host so a dirty kitchen or bathroom is not a factor at all. Instead, head lice are transferred from human to human by contact.
What kills head lice instantly? No methods have been found to instantly kill lice, though tea tree and lavender oil combinations in carrier oils have proven to be effective and time-efficient.
Hair straighteners won't kill the nits on your hair shafts. Even if the high heat does kill any adult lice or nymphs (young lice) that might be on your scalp—which isn't guaranteed—it won't kill the eggs (nits).
While the common ancestor of humans and gorillas lived around 7 million years ago, pubic lice and gorilla lice share a much more recent common ancestor — somewhere around 3-4 million years ago. The most likely explanation is a host switch, with gorilla lice adapting to live in human pubic hair.
There are instances where a lice infestation can be felt and others where it cannot. In cases where the lice can be felt, one feels them crawling on their heads. It is important to note that the feeling of a louse crawling on one's head triggers a sensation of something tickling the head, thus discomfort.
Teach children not to share clothing and supplies, such as hats, scarves, helmets, sports uniforms, towels, combs, brushes, bandanas, hair ties, and headphones. Disinfect combs and brushes used by a person with head lice by soaking them in hot water (at least 130°F) for 5 to 10 minutes.
As with furniture and carpets, adult lice typically live for around 2 days on pillows and sheets without human contact. Nits will not hatch and will die within a week. People should machine wash any pillows or sheets someone with lice has used in hot water of more than 130°F (54.4°C) .
They live in and lay eggs on pillows, in bed linens, on stuffed animals, and clothing and periodically visit the human body to feed. With this type of lice, it is important to machine wash pillows in hot water, machine wash bed linens in hot water, and put in a tumble dryer on a high heat drying cycle.
With effective treatment, head lice will completely go away after two to three weeks. The duration is dependent on how many lice made a home in your hair. Make sure you follow the instructions on your medicated shampoo, lotion or cream to get rid of lice quickly.
Lice are attracted to the blood they get through your scalp – short, long, clean or dirty. Doesn't matter! You have to clean every crevice of your house after a lice infestation.
The peak season for lice infestation is August through October and again in January. Head lice are tiny parasitic insects that feed on human blood. Lice come in three forms: nits (eggs), nymphs (baby lice), and adults. Nits are white or yellowish-brown and about the size of a poppy seed.
Head-to-head (or hair-to-hair) contact is the easiest way for lice to spread. The biggest risk groups are children in preschool, daycare, and school, and their families. While it's most common in young children, lice can spread to people of any age.
For the study, researchers compared tea tree oil, lavender oil, peppermint oil, and DEET. The researchers found that tea tree and peppermint oil repelled lice the most, and a tea tree and lavender combination kept some lice from biting people with treated skin.