You should see a dermatologist if you have cysts, nodules, or deep, painful acne. These forms — often called “cystic” or “nodular acne” — lie deep beneath the skin and are unlikely to respond to over-the-counter creams or cleansers. Because they are deeper and more inflamed, they’re at higher risk of leaving scars, and a dermatologist can prescribe stronger, targeted medications (oral or topical), or perform treatments like cortisone injections to reduce inflammation and prevent permanent scarring.

You should also see a dermatologist if you have late-onset or persistent acne.

• “Late-onset acne” refers to acne that begins in adulthood, even if you never had acne before.

• “Persistent acne” means acne that started earlier (e.g. adolescence) and continues into adulthood. Such chronic acne often requires medical evaluation and treatment because of the risk of scarring, pigmentation changes, or deeper skin damage.

Also — if over-the-counter products (like basic acne cleansers, creams, etc.) don’t help after several weeks (typically 4–6 weeks) — that’s a sign to consult a dermatologist. Moderate-to-severe inflammatory acne, especially involving nodules or cysts, generally doesn’t respond well to OTC treatments.

Finally — if acne is causing scars, pigmentation changes, or significant emotional / mental distress (self-esteem, depression, social anxiety), that’s a valid reason to seek professional help. Dermatologists can help manage both the physical and psychological effects.