However, repeat treatments at one to three week intervals are often necessary. However, there may be some scarring and pain as a result. Plantar warts are difficult to treat because the bulk of the wart lies below the skin surface. Many dermatologists prefer the use of salicylic acid plasters, removing the wart under local anesthesia, or by applying other chemicals to the wart. The dermatologist may recommend a change in footwear to reduce pressure on the wart or methods to reduce foot sweating.
Flat warts are often too numerous to treat with methods mentioned above.
For some adults, periodic office treatments are sometimes necessary. Genital warts are perhaps the most difficult to treat. First, all warts must be located. This may require an examination of the vagina and cervix in women and the rectum of both sexes. Then periodic office treatments with acids or by freezing are generally needed.