A patient who has psoriasis is taking methoxsalen (Oxsoralen) to treat the condition along with receiving therapeutic ultraviolet A. The nurse notes burning and blistering of the patient's skin. Which action will the nurse take?
a. Ask the patient about any recent exposure to sunlight.
b. Explain to the patient that these signs mean the treatment is working.
c. Report spread of the psoriasis to the patient's provider.
d. Tell the patient to take the methoxsalen after the ultraviolet A treatment.
ANS: A
Patients taking methoxsalen can develop burning and blistering with exposure to sunlight. These signs do not indicate efficacy of the treatment and do not mean the psoriasis is worsening. There is no indication for taking the drug after the UVA exposure.
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