Louse
Pediculosis is a disease common among the minority of the population and among the groups of individuals with low personal hygiene. Pediculosis is particularly widespread during wars and natural disasters, which are accompanied by a sharp deterioration of the personal and the household hygiene
Head louse
It causes pediculosis of the head. Its length is 1.5 - 2 mm, width - 0.7 mm. Its body consists of a head, abdomen and six legs. Its color ranges from yellowish to gray, depending on the color of the hair. The female louse is bigger than the male. It lays its eggs (nits) on the hair root. Through its chitin shell, the nits are firmly attached to the hair. By the sixth day, the young lice hatch that on the 11th day are already sexually mature. A female louse per month leaves a generation of 2000 - 2500 parasite.
The louse feed with blood once or twice a day. It pierces the skin with its rostrum. At the moment of the punching, it is felt a strong itching, leading to scratching instantly. During the punching of the skin, the salivary liquid of the louse causes inflammation with appearance of small red knots and bubbles.
When scratching, conditions for formation of a secondary infection are created. Skin changes are localized on the neck and behind the ears and the Local Lymph knots tumefy. The hair sticks on tufts full of lice, nits, purulent secretions and scabs