This text is for informational purposes only. Please consult a doctor or pharmacist before using any medication. 

Read the information leaflet that comes with the medication.

Most people who use Klisyri ointment do not experience any negative side effects. Doctors prescribe Klisyri ointment because they assess that the benefits that such treatment yields outweighs any likely unwanted effects.

Some of the side effects that have been reported include itching, pain and irritation at the areas where ointment has been applied. If there are other side effects such as redness, flaking or scaling, crusting, or more severe swelling, development of blisters, peeling, pus, ulcers, or breakdown of the skin, see a doctor as soon as possible.

Not all side effects are listed here. If these or other unlisted symptoms persist or worsen, consult a healthcare provider or pharmacist.

Actinic keratosis usually develops slowly over time. It is much more common in older people, and also in people who suffered one or more severe sunburns when younger.

It commonly shows up on areas of the skin that are frequently exposed to the sun, such as the face, ears, bald scalp, neck, hands, forearms, and lips. While the lesions typically lie flat on the skin of the head and neck, they can appear as raised bumps on the arms and hands. The color of an actinic keratosis patch may vary from light to dark shades like tan, pink, red, or a mix of these colors. The texture can be rough, with dry and scaly patches. Occasionally, it might cause itching or prickly discomfort.

It’s common for individuals to have multiple actinic keratosis lesions. When these occur on the lips specifically, they are referred to as actinic cheilitis.

Actinic keratosis may need to be diagnosed by means of a skin biopsy.

Damage to the skin from UV rays builds up over time. This means that even short-term exposure to the sun regularly can build up over a lifetime and increase the risk of actinic keratoses. Some people are more at risk than others, including:

• People with pale skin, blonde or red hair, and blue, green, or gray eyes
• People with darker skin, hair, and eyes who have been exposed to UV rays without protection
• Older adults
• People with suppressed immune systems (due to chemotherapy, AIDS, organ transplant, or other causes)
• People with rare conditions that make the skin very sensitive to UV rays, such as albinism or xeroderma pigmentosum (XP)