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Crabs or pubic lice, whose medical name is "Phtirius inguinalis", are small (millimeter-sized) black parasites. They are responsible for a communicable disease called phtiriase. Pubic lice nest in the hair around the genitals and lay their eggs, called "nits", which become glued to the hair. They may affect other areas of the body like the armpits or even eyelashes. Lice feed on human blood and can survive outside the body for 24 hours. Crabs is considered to be a sexually transmitted infection.


Symptoms of pubic lice include:
  • discomfort in the pubic region;
  • itching;
  • damage caused by scratching.


It is necessary to consult a doctor or a dermatologist when one experiences genital itchiness. Crabs can be seen by closely examining pubic hair. They look like small scabs at the base of the hairs. Nits can be identified as small rounded masses that are glued to the hair. If necessary, a magnifying glass is used. If the presence of public lice is confirmed, the presence of other sexually transmitted infections should be sought.


The treatment against lice is for the affected person, but also his sexual partners. You must use a shampoo sold in pharmacies, applicable once a week and then as needed. The product must be left in place for several hours before rinsing and combing the pubic hairs. Clothing and bedding should be washed at temperatures higher than 50 ° C. Sexual partners should also be treated.


Crabs are not the result of poor hygiene. Prevention is based on the treatment of all partners.