Lice survival depends on being fed regularly. If they are forced to skip meals for a couple of days, they'll die. Additionally, the eggs, or nits, need the warmth of the scalp. Without either or those, they can only survive a few days [source: Mayo Clinic].
Home Remedies for Itchy Scalp
If you should see flakes of dandruff on your hair and clothes, don't panic. First, try to determine the cause. Contact dermatitis, a sensitivity to products or dyes, may be the problem -- if this is the issue, simply use a different product. In other cases, cutting down on the usage of a product might be all that is required. Is your dandruff caused by too frequent or infrequent washings? Again, all you usually need to do is to make a slight adjustment in daily hygiene habits.
If flakes and flecks don't seem to be a reaction to a hair product or a question of how often you wash your hair, start to explore shampoo choices. You can find different types of medication in a variety of dandruff shampoos:
- zinc pyrithione (Selsun Salon and Head & Shoulders)
- coal tar (Neutrogena T/Gel)
- salicylic acid (Ionil T)
- selenium sulfide (Selsun Blue)
- ketoconazole (Nizoral) [source: Mayo Clinic]
Over-the-counter dandruff shampoos can be used to treat seborrheic dermatitis, psoriasis and the general instances of dandruff. Different cases respond to different types of shampoo, and experimentation may be the only way to find out what works for a particular case. Some people find that using one type of shampoo one day and another the next time is effective. To maximize the chance of success, leave the shampoo on for the recommended amount of time. A healthy diet and less stress may also help bring positive results.
Lice can usually be eliminated with over-the-counter insecticide shampoos such as Rid or Nix. For a child with lice who is under the age of two, or for people who would rather avoid chemicals, doctors recommend using a nit comb on wet hair. This careful procedure needs to be repeated every few days for about two weeks.
In some unfortunate cases, an itchy scalp can lead to hair loss. Read on to find out some things you can do to reduce your chances of losing hair when you have scalp psoriasis.