Scabies vulgaris is a skin infection caused by the scabies mite, a cutaneous parasite for which the presence of large and small inguinal and other pustules is the causative agent.
The disease does not have a clear name; instead, the colloquial “scabies” is more often used as the singular, and the plural “scabies.” The exact name is common itching, it comes from the word “cheska” - scratching areas of the skin in places where mites are localized.
Please note that this is not an independent disease. Scabies is a sign of infection by a type of microscopic mite, not related to humans or animals, that can transmit the disease to other people. Most often, the arthropod infects only humans, although re-infection of an animal with subsequent spread of scabies to humans is also possible. In general, the name “itchy tooth”, even in the singular, is incorrect - it is too broad a concept that requires clarification.
Research shows that, as a rule, about 50% of the world's population is infected with scabies. Accordingly, half will never itch, but it is difficult to call such a phenomenon normal - scabies should be excluded completely, without any conditions. Cases of the disease can occur in various social groups, including children. Infection always occurs in children's groups, for example, in kindergartens and schools - almost all cases are found there.