The Bottom Line

Certain medications can trigger breakouts that look like acne. Common culprits include corticosteroids (steroids), lithium, antiretroviral drugs, anticonvulsants, and tuberculosis medications. Drug-induced acne is different from typical acne—it tends to appear suddenly after starting a new medication, often lacks blackheads, and does not respond well to standard acne treatments. In most cases it improves within weeks of stopping or adjusting the medication—but never stop a prescription medication without talking to your doctor first.

What Is Drug-Induced Acne?

Drug-induced acne (also called an acneiform eruption) is a skin reaction caused by certain medications. It looks similar to regular acne—red bumps, pimples, and sometimes pustules—but it is triggered by a drug rather than by clogged pores or hormonal changes. Drug-induced acne accounts for 5–15% of acne-like eruptions in adults.

The key clue is timing: breakouts typically start within 1–4 weeks of beginning a new medication or increasing a dose. Drug-induced acne also tends to affect unusual age groups for typical acne—for example, adults in their 30s and 40s who have never had acne before, or older patients starting a new medication.

Which Medications Commonly Cause Breakouts?

  • Corticosteroids (steroids): Oral prednisone and other steroids cause acne in 5–10% of patients taking more than 20 mg/day. Steroid acne usually appears as uniform small red bumps, mostly on the trunk. Inhaled steroids can also cause facial acne in some people.
  • Lithium: Used for bipolar disorder, lithium causes acne in 25–50% of patients at therapeutic blood levels. Lithium-induced acne can be severe, with nodular and cystic lesions that look like severe acne vulgaris.
  • Antiretrovirals (HIV medications): Protease inhibitors and some other HIV drugs cause acne in 10–20% of patients, partly by affecting hormone levels and fat metabolism.
  • Anticonvulsants (seizure medications): Phenytoin and phenobarbital cause acne in 15–30% of patients. They alter how the liver processes hormones, which can increase androgen levels and trigger breakouts.
  • Tuberculosis (TB) medications: Isoniazid and rifampin cause acne in 5–10% of patients by directly irritating follicles.

Signs and Symptoms

Drug-induced acne has a few features that help distinguish it from regular acne:

  • Monomorphous lesions: Almost all the bumps look the same—usually small red papules and pustules—rather than the mix of blackheads, whiteheads, papules, and cysts typical in regular acne
  • Absent or few blackheads: Comedones (blackheads and whiteheads) are a hallmark of common acne but are usually absent in drug-induced acne
  • Unusual distribution: Steroid acne tends to appear mostly on the trunk; lithium acne can affect the face, trunk, and even the arms
  • Atypical timing: Breakouts begin within weeks of starting the medication, or get worse with each dose increase
  • Resistance to standard acne treatments: Topical treatments and antibiotics help less than expected because the root cause is the medication, not clogged pores

What Causes Drug-Induced Acne?

Different medications cause acne through different mechanisms:

  • Corticosteroids directly stimulate oil glands and cause follicular keratinization (abnormal skin cell buildup in hair follicles)
  • Lithium deposits in follicles and disrupts normal sebum (oil) composition
  • Antiretrovirals alter hormone levels by causing fat redistribution and raising androgen activity
  • Anticonvulsants change how the liver metabolizes hormones, indirectly raising androgen levels
  • TB medications irritate the follicular lining directly

In all cases, the end result is the same: abnormal follicle behavior leading to pimples.

Treatment Options

The most important step is identifying and addressing the causative medication—ideally in partnership with the doctor who prescribed it.

  • Medication review and communication: Tell your prescribing doctor that you developed acne after starting the medication. Do NOT stop the medication on your own, especially lithium (risk of psychiatric relapse), anticonvulsants (risk of seizures), or antiretrovirals (risk of viral rebound). An alternative drug may be available.
  • Dose reduction: If stopping the medication is not possible, reducing the dose—where medically safe—may reduce acne severity. Corticosteroid acne is dose-dependent and usually improves when the dose is lowered below 20 mg/day.
  • Topical treatments: Benzoyl peroxide 5–10%, salicylic acid 2%, and topical retinoids (adapalene) help manage drug-induced acne while medication adjustments are being made. They are less effective here than in typical acne, but still provide 50–60% improvement over 4–8 weeks.
  • Oral antibiotics: Doxycycline 50–100 mg daily for 3–6 months can achieve 60–70% improvement in moderate to severe drug-induced acne that cannot be resolved by changing the medication.
  • Isotretinoin: Rarely needed for drug-induced acne, but may be considered for severe or scarring cases where the causative medication cannot be changed.

Good news: once the causative medication is stopped or reduced, drug-induced acne resolves in 80–90% of patients within 4–8 weeks. Scarring is uncommon (5–10%) because the inflammation is less severe than in true cystic acne.

When to See a Dermatologist

  • You started a new medication and developed acne-like breakouts within weeks
  • Your acne appeared or worsened significantly after a dose increase
  • Standard acne treatments are not helping despite weeks of use
  • Your breakouts are unusual—all looking the same, with no blackheads
  • You are developing scars from the breakouts
  • You want guidance on whether your medication is the cause before stopping anything

Frequently Asked Questions

Is steroid acne the same as regular acne?

No. Steroid acne (caused by corticosteroids) differs from common acne in several ways: it appears mostly as uniform small red bumps on the chest and back (not the face), it lacks blackheads, and it started after beginning steroid treatment. It also tends to respond less well to typical acne treatments. Reducing the steroid dose—when medically safe—is the most effective treatment.

Can inhaled or topical steroids cause acne?

Yes, though less commonly than oral steroids. Inhaled steroids can cause small pimples around the mouth and chin. Topical steroid creams applied to the face can cause perioral dermatitis (acne-like bumps around the mouth and nose). Using non-fluorinated topical steroids and spacer devices with inhalers reduces this risk.

What if I need the medication that is causing my acne?

This is a common situation. For many conditions—like bipolar disorder managed with lithium, or seizure disorders requiring anticonvulsants—the benefit of the medication far outweighs the inconvenience of acne. Your dermatologist and prescribing doctor can work together to manage the acne with topical treatments or oral antibiotics while you remain on the medication. In some cases, an alternative drug with a lower risk of acne may exist.

How long does it take for drug-induced acne to clear after stopping the medication?

Most cases improve noticeably within 4–8 weeks of stopping or reducing the causative medication, and fully resolve within 3–4 months. Lithium-induced acne, even when it has been severe and nodular, typically resolves within 4–12 weeks of stopping lithium. Post-inflammatory dark spots may take an additional 3–6 months to fade.

References

  1. Oakley AM, Ramachandran V, Bhanu Prakash VMNS. Acneiform Eruptions. StatPearls. Updated 2023.
  2. Bhate K, Williams HC. Epidemiology of acne vulgaris. Br J Dermatol. 2013;168(3):474-485.
  3. Kircik LH. Drug-induced acne: pathophysiology and management. J Drugs Dermatol. 2007;6(6 Suppl):s4-s6.
  4. Dodiuk-Gad RP, et al. Drug-induced acneiform eruptions: causes and treatment. Am J Clin Dermatol. 2009;10(3):169-180.

Trusted Resources

Always consult a board-certified dermatologist for diagnosis and personalized treatment recommendations.