Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have:
severe skin redness within 24 hours after UVA treatment;
swelling, severe itching, or severe skin discomfort;
skin redness and swelling with blisters;
worsening of your psoriasis;
a new skin lesion, or a mole that has changed in size or color; or
blurred vision, tunnel vision, eye pain or swelling, or seeing halos around lights.
Mild skin redness may occur and can last for 1 or 2 days. This is a normal side effect after UVA treatment and may not be a sign of severe sunburn. Ask your doctor if you have concerns about any redness or swelling.
Common side effects may include:
itching, redness;
nausea;
feeling nervous; or
sleep problems (insomnia).
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 8-MOP side effects (more detail)
