Some medications can cause the skin to darken or develop areas of discoloration – a condition known as drug-induced hyperpigmentation. While it can be surprising or concerning when these changes appear, understanding why they happen and how to treat them can make a big difference. In this post, Aesthetic Solutions dermatologist Dr. Payvand Kamrani explains the causes, common culprits, and the most effective ways to restore a more even skin tone.
What is Drug-Induced Hyperpigmentation?
Drug-induced hyperpigmentation occurs when certain medications trigger changes in how pigment is produced or stored in the skin. This type of pigmentation isn’t caused by sun exposure alone – it’s a direct reaction to the way the body processes specific drugs. The discoloration can range from light brown to blue-gray and may appear on the face, arms, or other sun-exposed areas. In rare cases, it can also affect the nails, mouth, or even hair.
Which Medications Are Most Commonly Linked to Drug-Induced Hyperpigmentation?
Several commonly used medications have been linked to changes in skin color. The most frequent include:
- Antibiotics such as minocycline and tetracyclines
- Antimalarials including hydroxychloroquine
- Heart medications like amiodarone
- Mood or psychiatric medications such as chlorpromazine or imipramine
- Chemotherapy drugs and certain anti-inflammatory medications
Not everyone who takes these medications develops drug-induced hyperpigmentation, but the risk may increase with long-term use, higher doses, or sun exposure.
Why Does Drug-Induced Hyperpigmentation Happen, and Is It Permanent?
Different medications cause pigmentation in different ways. Some increase the production of melanin, the pigment that gives skin its color, while others deposit the medication or its byproducts directly into the skin.
The discoloration may fade slowly after the medication is stopped. Sometimes it can be long-lasting, especially if it has been present for years or if the pigment is deposited deeper in the skin.
How Is Drug-Induced Hyperpigmentation Diagnosed and Treated?
Diagnosis starts with a thorough review of your medications and a careful evaluation of your skin. Although not always needed, your dermatologist may do a small skin biopsy to look at the pigment under the microscope.
Treatment for drug-induced hyperpigmentation usually involves:
- Stopping or switching the medication, if medically possible
- Practicing strict sun protection to prevent the spots from darkening further
- Laser treatments such as PicoSure or Q-switched Alexandrite, which have shown the best improvement
- Topical bleaching creams, although these are typically less effective since the pigment lies deeper than the cream can reach
At Aesthetic Solutions, we use advanced lasers such as the PicoSure Pro and Q-Switch Alexandrite to safely and effectively target pigment in the skin. These lasers deliver energy in ultra-short bursts that help break down pigment particles without damaging surrounding tissue. Over a series of treatments, the pigmentation gradually fades. Dr. Kamrani is an expert on this topic, with a publication in Dermatologic Surgery on treatment options.
Hear from one of our patients who successfully treated drug-induced hyperpigmentation with lasers.
