Hidradenitis Suppurativa

What is hidradenitis suppurativa (HS)?<p>Hidradenitis suppurativa (HS) is a chronic skin disease.

Another name for it is acne inversa.

It causes painful, boil-like lumps that form under the skin.

It often affects areas where the skin rubs together, such <span class="qt1">as</span> your armpits and groin.

The lumps become inflamed and painful.

They often break open, causing abscesses that drain fluid and pus.

As the abscesses heal, they can cause scarring of the skin.</p>What causes hidradenitis suppurativa (HS)?<p>The lumps in HS form because of blockages of the hair follicles.

The blocked hair follicles trap bacteria, which leads to inflammation and rupture.

In most cases, the cause of the blockages is unknown.

Genetics, environment, and hormonal factors may play a role.