I have deep, painful cysts under my skin that won't come to the surface

A cyst forms when a blocked follicle ruptures below the skin surface, releasing sebum and bacteria into the surrounding dermis. The body mounts a significant immune response — which is what creates the hard, painful lump. Because the inflammation is deep in the dermis rather than near the surface, it can't drain easily, and it takes much longer to resolve.

The key factors that make this more likely: high sebum production (which increases the chance of a blocked follicle), highly androgenic skin (which drives that sebum overproduction), and an inflammatory response that's disproportionate to the trigger — which is why some people get cysts from breakouts that would produce surface spots in someone else.

Cystic acne is strongly associated with androgenic activity. DHT (dihydrotestosterone) — the most potent androgen at the skin level — drives sebaceous gland hyperactivity. In individuals with highly androgen-sensitive skin, even normal circulating androgen levels can produce an exaggerated sebum response.

This is why cystic acne often appears in predictable locations: the lower face, jawline, chin, and back — areas with a high density of androgen-sensitive sebaceous glands. It also explains why it tends to be worse around menstruation (when androgens are proportionally more active as oestrogen drops) and why it can worsen significantly post-pill.

Topical treatments work at or near the skin surface. Cystic acne is a deep dermal process. Products that address surface congestion, exfoliation, and bacteria can reduce the frequency of smaller breakouts but rarely resolve established cysts — and doing anything to a cyst topically (including extracting) usually worsens it.

For significant cystic acne, clinical treatment is the most appropriate path. Oral retinoids (isotretinoin), oral antibiotics for inflammatory control, and anti-androgen medications (spironolactone, combined oral contraceptives with anti-androgenic progestogens) all address the mechanism, not just the symptom.

The Skin Code framework can help identify whether the pattern is primarily androgenic — which informs the conversation with a GP or dermatologist about which clinical options are most appropriate.

Cystic acne scars because the deep inflammation damages the collagen in the dermis. The degree of scarring depends on the depth of inflammation, how quickly it resolves, and how efficiently the skin repairs — which is influenced by progesterone levels, sleep quality, and overall inflammatory load.

Preventing scarring starts with preventing cysts — which means addressing the androgenic driver early rather than managing each cyst individually. Early clinical intervention produces significantly better long-term outcomes than waiting.