Photoresponsive Diseases: Psoriasis Vulgaris

Annular plaque psoriasis is usually associated with lesion clearing and indicate good prognosis.

• TRUE

• FALSE

Answer explanation

Patient A.Z. a 27/F, G1P0 14 weeks AOG, diagnosed with GDM, and 10 years history of Psoriasis Vulgaris asked about the safety of phototherapy.

Is the following statement true or false:

Broadband UVB can be used safely in pregnancy and in children.

• TRUE

• FALSE

The application of a thin layer of Petrolatum is recommended before phototherapy sessions at it increases treatment effectiveness.

• TRUE

• FALSE

Patient I.A followed up for her 8th Cabinet NB-UVB phototherapy session. The last dose given to her 2 days ago was 1100 mj/cm2. She noted erythema on her chest after her phototherapy session which lasted for more than 24 hours but less than 48 hours.

The most appropriate thing to do is hold treatment on that day followed by return of dose to the last lower dose that did not cause persistent erythema.

• TRUE

• FALSE

Women of child bearing age receiving

NB-UVB should take folate supplementation.

• TRUE

• FALSE

Psoralens exert their effects in Psoriasis Vulgaris by intercalating between DNA base pairs and forming DNA cross-links upon exposure to UVA preventing DNA replication

• TRUE

• FALSE

One disadvantage of Bath PUVA is that it requires a higher cumulative dose of UVA than of oral PUVA to obtain clearance.

• TRUE

• FALSE

The combination of

oral cyclosporine + NB-UVB may be safely given and recommended for long-term treament of adults

with generalized plaque psoriasis.

• TRUE

• FALSE

Pulsed Dye Laser plays a role

in treatment of nail psoriasis.

• TRUE

• FALSE

In Photosensitive patients, NB-UVB phototherapy may be temporarily discontinued until the lesions resolve, and restarted at a much lower NB-UVB dose then increased slowly.

• TRUE

• FALSE