Like lice, dandruff can be itchy, but it is usually not as intense as the itching caused by lice. The drier the scalp, the more dandruff will usually itch.
It's not hard to spot the difference between lice and dandruff, if you know what to look for: The white flakes caused by dandruff are excess skin flakes, and as such will not be attached directly to the hair – by contrast, teardrop-shaped lice eggs directly adhere to the follicle, often very close to the scalp.
Common signs and symptoms of lice include: Intense itching on the scalp, body or in the genital area. A tickling feeling from movement of hair. The presence of lice on your scalp, body, clothing, or pubic or other body hair.
The lice may make your head itch. Lice won't go away without treatment. You can treat lice and their eggs with prescription or over-the-counter medicines. After treatment, your skin may still itch for a week or more.
Symptoms of Head Lice
Best places to look for nits: behind the ears and along the hairline at the neck. Itching of the scalp is the main symptom. A scalp rash may be present. The back of the neck is the favorite area.
An intensely itchy scalp without signs of a rash or another skin reaction can be a sign of a nerve problem. Your doctor may say you have neuropathy (neu-rop-ah-thie). It's the medical word for a problem along a nerve due to damage, disease, or an abnormality in the way the nerve works.
How soon do symptoms appear after exposure? Some people may not have symptoms, particularly with the first infestation or when the infestation is light. It may take 4-6 weeks for itching to appear the first time a person has head lice.
Itching on the areas where head lice are present is the most common symptom. However, it may take up to 4 to 6 weeks after lice get on the scalp before the scalp becomes sensitive to the lice saliva and begins to itch. Most of the itching happens behind the ears or at the back of the neck.
Can someone have nits but no lice? It may be possible to have nits but no lice. If a person cannot find any nymphs or adult lice in the scalp and the nits are more than a quarter of an inch from the scalp, these may be dead and from an old infestation.
Head lice are most active at night. Itching is the first and most common symptom but may not appear for weeks after contracting lice.
Itching. The most common symptom of head lice is itching on the scalp, neck and ears. This is an allergic reaction to louse bites. When a person has head lice for the first time, itching may not occur for 4 to 6 weeks.
Growing up you may have heard you mom always say that the only way to stop the itching is to stop scratching. We all know that's easier said than done! Mom was absolutely right on this strategy, because itching can cause the louse bite to reopen, potentially get infected, and take longer to heal.
One of the best ways to distinguish between lice and dandruff is the location. Dandruff describes dry skin flaking off from the scalp. The eggs of lice, on the other hand, adhere to the hair shaft itself. Using a magnifying glass, you may be able to see adult lice moving on the scalp.
The way to tell the difference between nits and dandruff is that dandruff is much more easily removed from the hair, whereas nits are glued to the hair shaft. If you can remove the white speck easily then it is dry skin (dandruff), if not, it could be a nit.
It is easier to see their eggs (called nits), which resemble dandruff, but are attached to the base of the hair, close to the scalp. Head lice live only on humans—they do not live on pets.
Children can have a few nits without actually having a case of head lice. Usually children have no more than 10 to 20 live lice. Good lighting is important when you are checking. Head lice move fast and are hard to see.
If you leave head lice untreated, the symptoms of lice infestation will worsen. The lice will continue to feed on the scalp, spreading from person to person, and the itching and discomfort will become more severe. As the lice population grows, so will the amount of eggs they lay, raising the risk of reinfestation.
People with short hair were least likely to have lice, and people with thick hair more often had lice than those with thin hair. Lice also can't survive if hair is less than 6 millimetres long, which is why shaving a person's head is a very effective treatment, Rukke said.
If you look closely at your child's hair on their scalp, you may be able to see the tiny white nits attached to the hair shafts. Nits resemble dandruff but aren't as easy to brush or shake off the hair. Adult lice can move around quickly and are difficult to see.
How many head lice are usually found on an infested person? Typically, 10–15 head lice are found. The number of lice often depends on personal hygiene, for example, how often the person bathes, shampoos, or changes and washes his/her clothing.
Unlike dandruff or sand, nits can't be shaken off the hair shafts. Best places to look for nits: behind the ears and along the hairline at the neck. Itching of the scalp is the main symptom.
Dandruff and seborrheic dermatitis
These are the most common reasons for an itchy scalp. “Your body's inflammatory response to an overgrowth of yeast causes the itching and flaking associated with these conditions.