They’re caused by HPV strains 3, 10, 28, and 49, according to Healthline. Periungual warts, which grow in the skin surrounding fingernails and toenails, are a reaction to HPV strains 1 ...

Our patient received an intradermal injection of CA antigen solution into periungual warts located on the distal left thumb and distal subungual area of the left index finger. Within 24 hours ...