I think uts like burrow>> scabies perhaps. Any other area of the body either? it is uncommon in this site!
For prevention washing the clothes and bedroom staff with hot water and bathing more frequent. and avoid contact with people with itching and similar symptoms.
Scabies>>Permethrin 5% cream is usually recommended as the first treatment. Malathion 0.5% lotion is used if permethrin is ineffective.