Underground pimples — deep, painful nodules without a visible head — form when sebum, bacteria and dead skin cells trap inside a hair follicle. Current findings point to warm compresses for mild lesions, guideline-backed topicals and oral antibiotics for persistent acne, and isotretinoin only for severe nodular disease. Cleveland Clinic describes these lesions on the face, chest and upper back, with teenagers and young adults most often affected. Hormonal shifts and family history increase susceptibility, while deep inflammation raises the risk of lasting marks.
Medical information disclaimer: This article is for general educational purposes only and does not provide medical advice, diagnosis, or treatment. Always consult a physician or other qualified health professional about symptoms, medications, tests, or treatment decisions.
Table of Contents
- Where they appear and who gets them
- Why deep nodules hurt and can scar
- What helps at home — and what harms
- Which prescription options guidelines support
- When to seek dermatology care
Where they appear and who gets them
Cleveland Clinic reports underground pimples most often affect the face, chest and upper back. They are more common in teenagers and young adults. Hormonal shifts and family history increase susceptibility.
That pattern matters for expectations. A tender lump on the jaw, chin, chest or upper back fits the usual picture. Repeated deep lesions in the same zones suggest acne-prone skin rather than an isolated clogged pore.
Why deep nodules hurt and can scar
NCBI StatPearls explains acne nodules arise from sebaceous-gland sensitivity to normal androgens. Follicular plugging, overgrowth of Cutibacterium acnes and inflammation complete the process. The result can be disfiguring lesions and scarring.
Depth explains the pain. Pressure builds below the surface with no head to drain. Inflammation can also damage surrounding tissue, so early control matters more than force.
What helps at home — and what harms
Cleveland Clinic advises treating mild lesions at home with a warm wet washcloth for about 10 minutes several times daily, as described in its blind-pimple guidance. Warmth can ease pain and encourage natural resolution.
The same source explicitly warns never to pop or squeeze them. Squeezing worsens inflammation and risks permanent scars. Patience protects skin that pressure would injure.
- Use a clean, warm wet washcloth for about 10 minutes, several times daily
- Stop pressure, picking, needles or squeezing attempts
- Leave a painful nodule alone if it enlarges, rather than forcing drainage
Which prescription options guidelines support
The American Academy of Dermatology's 2024 acne guidelines strongly recommend topical benzoyl peroxide, retinoids and antibiotics, plus oral doxycycline, according to the AAD's updated acne guidelines. Combined topical regimens are preferred for better clearance. That combination approach suits persistent underground acne.
Oral isotretinoin is an escalation option. The Academy strongly recommends it only for severe acne, scarring disease, psychosocial burden or failure of standard therapy. Persistent nodular lesions fall into that later decision, not first care.
When to seek dermatology care
Healthline's medically reviewed summary points to care for lesions lasting weeks, enlarging nodules, scarring or distress. Clinicians may use diluted cortisone injections or prescription therapy rather than extraction. Timely visits can limit pain and scar risk.
The FDA limits isotretinoin to severe recalcitrant nodular acne with multiple inflammatory nodules 5 mm or greater unresponsive to systemic antibiotics, as stated in FDA prescribing information. The reason is embryofetal toxicity and other serious adverse effects. Bring a list of prior treatments and how long each nodule has lasted.