Light therapy vs chemical peels: which zaps precancerous spots better?
NCT ID NCT04429308
First seen Jul 01, 2026 · Last updated Jul 02, 2026 · Updated 1 time
Summary
This study compares two treatments for actinic keratoses—rough, scaly spots that can turn into skin cancer—on the arms. One treatment uses a light-sensitizing gel followed by blue light (photodynamic therapy), while the other uses a two-step chemical peel. About 60 adults with spots on both arms will get one treatment on each arm, and doctors will count how many spots clear up after 2 to 8 weeks. The goal is to see which approach works better and is practical for larger studies.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- Photodynamic therapy (aminolevulinic acid plus blue light) and chemical peels (Jessner's solution plus trichloroacetic acid)
- What this could lead to
- If one treatment proves more effective, it could become a preferred option for clearing precancerous skin spots on the arms.
- What could go wrong
- This is a small pilot study, so results may not be definitive. Both treatments can cause skin reactions, and the best approach may vary by person.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Northwestern University Department of Dermatology
Chicago, Illinois, 60611, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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