UVB For PSORIASIS

24hrs-MED

1. Initial dose: - 70% of MED.

2. Increment: - Increase up to 20% each visit

- At the start we can increase up to 40% of MED.

- If No erythema on normal skin -> Increase by 20% of MED.

- If starting MED <100 mJ/cm² -> Increase by ³ 10 mJ/cm²).

3. No of Sittings: 3-4 sitting / week.
4. Followup: - 60-70% improvement -> Increase by 5-10% of MED.

- ³ 80%-> Hold last dose

- ³ 90% -> Stop.

• Missed sittings:

- 1-2 missed sittings-> previous dose

- 3 missed sittings-> dose prior to last dose

- ³ 4 missed sittings-> repeat phototest

• Adverse Effects:

- Mild erythema: same previous dose.

- Moderate erythema: same previous dose, next sitting -> Increase by 10% thereafter.

- Severe erythema: No treatment sitting (steroids, NSAIDs) & repeat phototest.

- Itch -> emollient + antihistamine.

- Facial erythema -> sunscreen.

• Remarks:

limit the use of topical steroids + encourage frequent use of emollient before ttt by applying a very thin layer of emollient.

Translate page on-line: French, German, Italian, Portuguese, Spanish

Back