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BRIEF REPORT
Year : 2021  |  Volume : 7  |  Issue : 2  |  Page : 79-83

Comparative study of PUVA and NB-UVB in the management of chronic plaque psoriasis


Department of Dermatology, SVS Medical College, Mahbubnagar, Telangana, India

Correspondence Address:
Angoori Gnaneshwar Rao
F12, B8, HIG-II APHB, Baghlingampally, Hyderabad, Telangana.
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijdd.ijdd_26_20

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Background: There are independent studies on PUVA and NB-UVB therapy for the treatment of psoriasis, but studies comparing both PUVA and NB-UVB are scarce. Aim: The aim of this study was to compare the efficacy and safety of PUVA and NB-UVB therapy in chronic plaque psoriasis. Materials and Methods: Fifty patients of chronic plaque psoriasis of more than 20% of body surface area and of more than 2 years duration with Psoriasis Area Severity Index (PASI) score of more than 10, aged above 12 years, were subjects in the study. PASI score was recorded. Patients were randomly allocated to one of the two groups, each consisting of 25 patients and administered therapy as per protocol: Group A: PUVA—psoralens + UVA or Group B: NB-UVB phototherapy. Therapeutic response of patients was followed up every week and PASI score was calculated at 0, 2, 4, 6, 8, 10, and 12 weeks. Observations: Commonest age group afflicted in both the groups was 31–40 years. There was significant improvement (P-value <0.0001) from baseline to 12th week in patients subjected to PUVA as well as NB-UVB therapy. In the PUVA group, minimum and maximum duration of treatment for PASI 75 was 5 and 11 weeks, respectively, whereas in the NB-UVB group it was 6 and 12 weeks, respectively. In the PUVA group, minimum and maximum number of exposures for PASI 75 was 10 and 22, respectively, and in the NB-UVB group it was 18 and 36, respectively. Conclusion: PUVA and NB-UVB are both effective therapies. However, NB-UVB is considered as good, effective, and safer treatment for plaque psoriasis with no or minimal long-term carcinogenic risk, and it can be safely used in children, pregnant women, and in patients with hepatic and renal insufficiency. However, more number of exposures and less energy (joules) are required in NB-UVB to achieve therapeutic target. Limitations: The number of cases in the study is less.


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