Cooking oils and meats are also a good source of fats. One cup of milk or yogurt or an ounce of cheese would be good examples of how much you should include in your daily diet during the healing process.
A pilonidal cyst is a small sac under the skin. Pilonidal cysts may become infected and cause an abscess (collection of pus). Pilonidal cysts may be caused by an ingrown hair. A hair may become ingrown if it rubs against your skin. The friction can cause hair to dig into the skin and get trapped there. A pilonidal cyst may look like a small hole or dimple in the center of your lower back. It is usually located right above your buttocks.
Pilonidal (say py-luh-NY-dul) disease is a chronic skin infection in the crease between the buttocks. People with this condition have one or more cysts in that area that tend to get inflamed and infected. A pilonidal cyst may look like a small dimple (called a pit or  sinus ).Hair may stick out from it.xperts think pilonidal cysts may form in one of three ways: 1  A hair follicle in the skin becomes irritated or stretched. 2  A loose hair may get trapped in the crease between the buttocks. 3  Some cysts may be present at birth (congenital).