Lice is small parasitic insects without wings, Lice spread easily - especially among children in schools - through close personal contact and personal belongings. Personal hygiene or cleanliness in the home or school has nothing to do with getting head lice. Head lice are mainly spread by direct contact with the hair of an infested person. The most common way to get head lice is by head-to-head contact with a person who already has head lice.

Types of lice:
1) Head lice: This type of lice grows in the scalp. It is very easy to see on the back of the neck and on the ears
 Head lice infest the head and neck .Lice move by crawling; they cannot hop or fly, girls get head lice more often than boy, most likely due to more head- head contact and sharing personal stuff more often. 
Signs and symptoms of head lice include:
Severe itching and difficulty sleeping and irritation, Lightning sensation of hair movement, Small red bumps on the scalp, neck, and shoulders.

2) Body Lice: This type of lice live in clothes and bedding and moves to your skin to feed, generally it is limited to persons who live under conditions of crowding and poor hygiene or through direct contact with a person who has body lice or through contact with articles such as clothing that have been in contact with an infected person.
Signs and symptoms of body lice include: 
Severe itching and difficulty sleeping and irritation, Small red bumps on body.

Lice prevention:
The following are steps that can be taken to help prevent and control the spread of head lice:
-Avoid head-to-head contact during play and other activities at home, school 
-Do not share clothing such as hats, coats, sports uniforms, hair ribbons, or barrettes
-Do not share combs, brushes, or towels-
-Do not lie on beds, couches, pillows, carpets, or stuffed animals that have recently been in contact with an infected person
-Vacuum the floor and furniture, particularly where the infested person sat or lay
-Bath regularly and change into properly laundered clothes many times per week. 

Lice treatment: 
Non-Pharmacological treatment:
-Shaving the hair is an effective means of eradicating lice, however, for cosmetic reasons it's an undesirable option.
-wet combing with nit combs
These non-pharmacological treatments cannot eradicate and kill lice completely, so you must use pharmacological treatment.

Pharmacological treatment:
Many products are available for lice treatment as shampoo or spray. You must consult your doctor or pharmacist for the best choice according to the case reported.

General instructions:
-Do not use extra amounts of any lice medication unless instructed to do so by your physician and pharmacist. The drugs used to treat lice are insecticides and can be dangerous if they are misused or overused.
-All anti lice medications should be kept out of the eyes. If they get into the eyes, they should be immediately flushed away.
-Do not treat an infected person more than 2–3 times with the same medication if it does not seem to be working. This may be caused by using the medicine incorrectly or by resistance to the medicine. Always seek the advice of your health care provider if this should happen. He/she may recommend an alternative medication.
-Do not use different head lice drugs at the same time unless instructed to do so by your physician and pharmacist.