Post Date November, 17 2024
Lice disease is a skin disease caused by lice and occurs worldwide. Pudendal lice are a type of lice disease that can be transmitted through sexual contact and are often co infected by couples, with females being more common. In recent years, it has become popular in the United States and Western Europe. So, what is the cause of pubic lice?
Infectious (35%):
According to their morphology and parasitic location, lice can be divided into three types: head lice, body lice or clothing lice, and pubic lice. They parasitize on human hair, underwear, and pubic hair, all of which suck human blood and live. They also release toxic saliva, which can cause itching dermatitis. Clothing lice can transmit fever, epidemic typhus, and trench fever, while pubic lice generally do not spread infectious diseases, But in some cases, there is a possibility of transmission of typhus fever in individual reports.
The width of pubic lice is shorter than that of human head lice and human lice, and the body length of female lice is 1.5 × 2.0mm, male louse body length 0.8 × 1.2mm, with three pairs of feet, slender front feet, and the other two pairs with hook shaped giant claws. The chest and abdomen are connected without obvious boundaries, and the abdomen is short and wide, slightly resembling a crab. It usually tightly grasps the pubic and anal hair with giant claws, and spreads to the armpits, eyebrows, or eyelashes, which is not commonly seen.
Living environment (25%):
It is usually done by grasping nearby hair and using mouthparts to suck blood. It can also crawl on the skin and look like small gray yellow particles, usually limited to the pubic hair or lower abdomen. The lice eggs are slanted on the pubic hair and are rust or light red particles, sometimes resembling a spotted blood scab, which is easy to distinguish from white head lice eggs.
The pubic lice are photophobic and prefer shaded areas, and can move day and night. When the temperature is too high or too low, they remain motionless. Female and male adults fertilize within 24 hours after mating, and the female begins to lay eggs. The pubic lice lay fewer and smaller eggs, and until 24 to 48 hours before their death, they lay about 3 eggs per day, producing about 50 eggs per day. The adult lives for about 30 days and dies within 24 hours after leaving the host. The lice are incomplete metamorphosis, with three stages in their life history: eggs, nymphs, and adults, The entire life cycle is completed on the host, and the female insect secretes glue when laying eggs, which firmly adheres to the hair or fabric fibers.
