How to Recognize Head Lice
It is important to confirm a lice infestation before treating.
What are head lice?
Head lice are tiny, wingless insects that live on the human scalp. They are about as big as sesame seeds. Head lice sustain themselves by sucking blood—just as mosquitoes do. However, unlike mosquitoes, lice cannot fly or jump from one person to another; they can only crawl. Children often get head lice from head-to-head contact with other children, but may also get them by sharing personal items such as hats, combs, or headbands.
What are lice eggs and nits?
Lice eggs are laid by the female louse. They are about the size of a poppy seed and are difficult to see because their color blends in easily with hair. Lice eggs are laid near the root of the hair and are attached to the hair shaft with a waterproof, glue-like substance that can't be washed or blown away.
Nits are the empty eggshells left behind when lice hatch from eggs. Dandruff, sand and flakes of hairspray are commonly mistaken for lice eggs or nits. Eggs and nits are not easily removed and must be carefully combed out with a fine-tooth comb.
Eggs and nits vary in color, from yellowish-brown to white. Since the hair grows, nits are usually found further away from the root of the hair. Many schools have a “No Nit Policy,” which means children who have had head lice are not readmitted to school until all the nits are gone. If you have seen live lice on your child’s head, it is very important to comb out eggs and nits as part of the lice treatment process.Lice treatment products should not be used if lice or nits have not been seen.
How long do head lice live?
Head lice live for approximately 40–50 days and go through 3 stages in their life cycle:
Egg Stage: The female louse lays the egg with a special glue that cements it to the hair shaft near the root. The lice egg develops and hatches approximately 10 days later.
Nymph Stage: Once the louse hatches, it is called a nymph and is barely visible to the naked eye. The nymph cannot reproduce because it is not fully developed. After about 12 days, it becomes an adult.
Adult Stage: The female adult louse can lay up to 10 eggs per a day—starting another generation of lice. The adult stage lasts about 30 days.Lice do not live longer than 2 days if they are separated from the head.
Head lice symptoms
The most common head lice symptom is itching. If you notice your child scratching his or her head often, especially behind the ears or at the nape of the neck, check for lice. Usually lice can be found in these areas. Also, do frequent checks when you know of a lice outbreak in your child's school.
How to check for head lice
Find a comfortable area for you and your child. Have your child seated so you can easily maneuver around him/her while checking for lice.
Examine the head under bright, natural light. Head lice may be hard to detect because they move quickly and are very small.You may wish to use a magnifying glass to more easily see the lice.
Newly laid eggs are almost transparent. It is helpful to examine the head from different angles of light. This is easily done by moving around your child while examining.
Part the hair and closely examine the scalp, especially the nape of the neck and behind the ears.
Pubic and body lice
Pubic Lice (Crabs) Symptoms
The number one way to get crabs is from sexual contact. Therefore, infested sexual partners should be treated simultaneously to avoid re-infestation. The lice are very small and look like brown or grey dots on the skin. Crabs usually cause intense itching and lay small white eggs on the hair shaft, generally close to the skin surface. In hairy individuals, crabs may be present on the short hairs of the groin, thighs and trunk, underarms, and occasionally on the beard or mustache.
It's possible to get crabs from infected bedding, towels, and clothes.
Crabs are equal opportunity pests found in the genital areas of men and women.
The most common symptom of crabs is extreme itching in the genital area.
Crabs are slightly larger than sesame seeds and resemble miniature crabs. They can be found by closely examining the genital area under a bright light.
Pubic Lice Treatment
Treatment to get rid of crabs is similar in manner to that used for head lice. It is important to treat the infected area thoroughly, which will include anal hairs and on the thigh area. Lice will spread to these surrounding areas, so complete treatment is necessary. It is also a good idea to treat infested sexual partners to reduce the chance of re-infestation.
Apply RID® Lice Killing Shampoo to DRY HAIR only, until area is thoroughly wet, being careful not to allow the product to come in direct contact or penetrate mucus membranes. Use caution to apply it to the skin and hair, but avoid the anus or vaginal openings.
After completing application, allow product to remain for 10 minutes but no longer.
Add sufficient warm water to form lather. Rinse thoroughly.
A fine-tooth comb or a special lice/nit-removing comb like the patented RID® Lice Comb can be used to help remove head lice, eggs, and nits from hair. You may need to use a mirror to ensure that all hair has been combed.
Clean infested area thoroughly. Disinfect underwear by machine washing in hot water [above 54°C (130°F)], then using hottest dryer cycle for at least 20 minutes.
Clothing and items that are not washable can be dry-cleaned OR sealed in a plastic bag and stored for 4 weeks.
A second treatment must be done in 7–10 days to kill any newly hatched crabs.
Body Lice Symptoms and What to Look for
Common symptoms of body lice infestation include severe itching and rashes caused by an allergic reaction to louse bites. Red bumps may also appear on the skin. When body lice infestation has been present for a long time, skin around the waist or groin can become thickened or discolored.
Body lice are typically larger than other types of lice. They can be tan, grey or white in color. Lice eggs are oval and typically yellow or white in color.
Body lice and their eggs are generally found in the seams of clothing, particularly in the waistline and armpit area. They move to the skin to feed, then return to the seams of the clothing where they lay their eggs.
Body Lice Treatment
To get rid of body lice, disinfect clothing by machine washing in hot water [above 54°C (130°F)], then using hottest dryer cycle for at least 20 minutes.Dry clean non-washables.
Do not seal clothing in plastic bags because nits can remain dormant for up to 30 days.