Interdigital abscesses may form as a result of the penetration of the skin by a foreign body - frequently grass awns.
The common signs are :
Surgical exploration of the cysts will help to identify and remove any foreign material eg grass awns.
Surgical removal (excision) off the swellings is the usual outcome if a patient does not respond to medical treatment. Unfortunately recurrence at the same site or in another interdigital web is common.
Long term problems
Updated October 2013