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 ...

Boils and cysts are two types of growths on the body. Also known as furuncles, boils are pockets of pus (a creamy, white substance) on the skin caused by bacteria infecting hair follicles.

You might have read horror health stories of someone who grew a cyst that contained hair, skin or teeth ... you see on an ultrasound scan shows follicles getting stuck on the ovaries.