long do head lice live away from the head?
cannot normally survive for more than 48 hours without a blood meal; therefore,
they will not survive for long off the head. Very few nits will hatch away from
the head, and any nymphs which emerge will die very soon without a blood meal.
are the symptoms of pediculosis (an infestation of head lice)?
with light infestations may not notice any problem, itching is the most common
symptom, caused by an allergic reaction to the bites. Other symptoms may include
a tickling feeling of something moving in the hair and sores on the head caused
can you detect a head lice infestation?
nits, nymphs or adult lice is the only way to confirm the presence of lice. It
requires a thorough examination of the scalp. Nymphs and adults move quickly and
are often difficult to observe. Finding nits close to the scalp is the usual way
to confirm an infestation. However, finding nits which are more than 1/4 inch
from the scalp usually indicates that they are old and not viable, despite being
firmly cemented to the hair.
head lice transmit any diseases?
Head lice do
not transmit any diseases. Sores caused by scratching and crusting can result in
secondary bacterial infections.
is the treatment for pediculosis?
To treat a
head lice infestation, an over-the-counter (OTC) or prescription shampoo, lotion
or cream rinse is used. The instructions of your health care provider and the
product label should be followed carefully when using any pesticide medication.
Most head lice products recommend a second treatment in seven to 10 days after
the first treatment, in order to kill any nymphs which emerge from the eggs.
Treatment failures are common, as head lice can be resistant to some products.
the medications kill the nits?
are not completely ovicidal (kills all the eggs). Most head lice products
recommend a second treatment in seven to 10 days after the first treatment in
order to kill any nymphs which emerge from the eggs.
effective are alternative treatments?
alternatives to pediculicides (products designed to treat lice) have been
promoted because of treatment failures. Unfortunately, there is little
documentation that these methods are effective at
killing the lice and nits on the head. Some of these remedies include olive oil,
mayonnaise, tea tree oil, petroleum jelly and hair dryers. Among substances
which should never be used are kerosene, gasoline and pesticides not registered
for treatment of lice, such as diazinon.