If we only deal with the surface of a problem, it usually comes back. Real change happens when we get to the root of it.
Cysts are the perfect example of this idea. What we see on the skin is only the top of something much deeper.
Under every epidermoid cyst there is a sac, a thin wall of skin cells that keeps producing keratin. This sac is the true root of the problem.
On the shoulder, cysts are often found where clothing and straps rub against the skin, which can make them inflamed and uncomfortable.
When a doctor removes one, the first part is easy: the creamy contents are pressed out through a small opening.
