myHSteam

That's a really tricky one to call without a proper examination, and honestly even doctors find it difficult to distinguish between the two without specialist knowledge. The slow, painless growth over 18 months does sound more consistent with an epidermoid cyst, as HS lesions tend to be more reactive and painful from Show Full Answer

That's a really tricky one to call without a proper examination, and honestly even doctors find it difficult to distinguish between the two without specialist knowledge. The slow, painless growth over 18 months does sound more consistent with an epidermoid cyst, as HS lesions tend to be more reactive and painful from earlier on.

That said, the fact that it has now become inflamed, hardened, and sore — and is located in an area already affected by HS — means HS can't be ruled out. Stage 1 HS lesions can appear as:

- Pea-sized bumps under the skin
- Lesions in the groin or vulvar area
- Bumps that may drain a small amount of fluid
- Lesions that can become red, hard, and sore The key difference is that HS lesions tend to recur in the same spot, eventually forming tunnels under the skin and scarring over time. A cyst that has never caused issues before and grew very slowly is less typical of HS behavior.

The most important next step is getting a referral to a dermatologist who specializes in HS. They can properly examine the lesion and may perform a skin biopsy or bacterial culture to get a clearer picture. This is especially important given that antibiotics haven't yet resolved the inflammation.

Don't hesitate to push for that specialist referral — getting the right diagnosis early makes a real difference in managing things long-term.

 AI-generated responses are not a substitute for medical advice. These services are not intended to diagnose, treat, or cure any condition or disease. Always ask your doctor about specific health concerns.

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