Cysts can be formed for a variety of different reasons. They can be caused by infections, inherited diseases, chronic inflammation and most commonly blockages in ducts. The common type of cysts are:
Epidermoid & Pilar cysts
An Epidermoid cyst is a small benign bump filled with keratin protein, often these occur if you have trauma around a hair follicle within the skin. An Epidermoid cyst grows deeper into the skin rather and eventually grows outwards to the surface which then the cyst is properly formed and able to be removed.
Sebaceous cysts often form from the sebaceous glands. These glands are part of the skin and hair follicles, if they get ruptured or blocked the glands then generate sebaceous cysts. The sebaceous glands make the oil for your hair and skin, these cysts are made from sebum and are less common than Epidermoid cysts.
Chalazia cysts are benign cysts that occur on your eyelids when the oil gland duct is blocked, These cysts can be quite painful and cause blurred vision, painful swelling and can often grow quite large. Chalazia cysts are best to get diagnosed and removed as soon as possible before the symptoms cause too much pain for the individual.