Skin Cysts & Sebaceous Cysts
Why You Don’t Have to Keep Ignoring That Lump
You’ve noticed a lump under your skin. It’s firm, round, maybe a bit tender. It hasn’t gone away. Maybe you’ve Googled it. Maybe your GP said it’s “just a cyst.” But here’s the thing, it’s bothering you. And you’re not imagining that.
What is a Skin Cyst?
Let’s clear up the confusion.
A skin cyst is a small sac under the skin, filled with fluid, keratin (a soft cheese-like substance), or oil. The most common type is called a sebaceous cyst (sometimes also called an epidermoid or epidermal inclusion cyst – confusing, we know).
These cysts often form when a hair follicle or oil gland becomes blocked. They tend to grow slowly, and can appear anywhere – but most commonly on the Scalp, Face, Neck, Back, Chest or Genitals.
They’re not harmful. But they can get inflamed, infected, or burst – and that’s when they really start to cause trouble.
Will It Come Back?
When a cyst is removed properly – the sac and all – it shouldn’t return.
But here’s the catch: draining it (which some GPs or A&E doctors might do during a flare-up) doesn’t solve the problem. It empties the cyst, but leaves the sac behind. And if the sac’s still there, it’ll fill up again.
That’s why we do complete surgical excision at Sozo – so you only have to deal with it once.




