Diclofenac is a nonsteroidal anti-inflammatory drug (NSAID). It is used topically to treat a skin condition called actinic keratoses (AK).Actinic Keratoses (AK) is a common pre-cancerous condition caused by overexposure to sunlight.

Apply this medication topically to the affected skin lesions usually twice daily or as directed by your doctor. Use enough of the medication to thoroughly cover and rub into the skin lesion(s) being treated. Wash your hands immediately after using this medicine unless your hands are part of the area being treated. Avoid getting this medication in your eyes. Do not apply this medication to open wounds, infections, or damaged skin. Do not bandage, wrap, or cover the treated area unless you are instructed to do so by your doctor. Do not use other skin/topical products (e.g., cosmetics, lotions, sunscreens) on the affected/treated areas because it may decrease the effectiveness of this medication. It may take up to 4 weeks to notice significant improvement of your condition.

Skin irritations (e.g., dryness, redness, itching, or scaling) may occur. If any of these effects persist or worsen, notify your doctor. Remember that your doctor has prescribed this medication because the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Contact your doctor if you experience muscle pain, trouble breathing, swelling, open sores on the skin (ulcers), eye redness or swelling (conjunctivitis), or stomach pain. Do not use any more doses of this medicine unless your doctor tells you to do so. If you notice other effects not listed above, contact your doctor, nurse, or pharmacist.