What is a subcutaneous cyst?
A person with a subcutaneous cyst has an abnormal collection of fluid that is surrounded by a wall of tissue. Causes of subcutaneous cysts include inflammation or infection.

What are the symptoms of a subcutaneous cyst?
Symptoms of a subcutaneous cyst include a lump, which may be attached to the skin or freely moveable beneath the skin. The lump may be soft, firm, or mildly tender.

How does the doctor treat a subcutaneous cyst?
The treatment for a subcutaneous cyst depends on the cause of the nodule. Some cysts resolve without treatment. Treatment for a subcutaneous cyst may include corticosteroid medications or surgery.