Cysts, abscesses and lipomas all have one common feature: they cause a lump or bump on the skin. All three are very common and I literally remove a hundred or more lipomas and sebaceous cysts a year.

Interdigital cysts are firm, raised subcutaneous inflammatory lesions found in and on the interdigital webs of the paw. The cause is usually a traumatically ruptured hair follicle. The surrounding ...