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Year : 2017  |  Volume : 18  |  Issue : 1  |  Page : 31-35

The study of clinical outcome of systemic methotrexate uses in moderate to severe childhood psoriasis

1 Department of Dermatology, Muzaffarnagar Medical College and Hospital, Muzaffarnagar, Uttar Pradesh, India
2 Department of DVL, Muzaffarnagar Medical College, Muzaffarnagar, Uttar Pradesh, India
3 Department of Pathology, Muzaffarnagar Medical College, Muzaffarnagar, Uttar Pradesh, India

Correspondence Address:
Tarang Goyal
Department of Dermatology, Muzaffarnagar Medical College and Hospital, Muzaffarnagar, Uttar Pradesh
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/2319-7250.195570

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Background: Currently, very few studies exist regarding the use of systemic methotrexate (MTX) in childhood psoriasis. Aim: The aim is to study the effect of systemic MTX with respect to overall efficacy and safety in varied spectrum of severe childhood psoriasis patients and to assess the degree of improvement objectively by measuring psoriasis area severity index (PASI) at each visit. Materials and Methods: All patients <18 years of age having PASI >10, not responding to topical therapy and without having any contraindication to systemic MTX use were included in the study done during a period of two years. MTX was prescribed orally at a dose of 0.2–0.4 mg/kg/week and folic acid on daily basis except on the day of MTX to all the patients. Both clinical and laboratory follow-ups were done weekly for the first 2 weeks and then at 15 days interval for 1 month and monthly after that for measuring PASI and to rule out any side effects of MTX. After 75% improvement in PASI score the dose was decreased at rate of 2.5 mg/week and stopped after complete resolution of the lesions. Results: Out of nine cases (M/F - 6/3), quickest response to MTX was seen in pustular psoriasis (4.5 weeks) and one case of plaque psoriasis (5 weeks) and slowest response was seen in rupoid variant (13 weeks). Mean duration to achieve 50% and 75% improvement in PASI overall were 4.6 ± 2.46 weeks and 7.6 ± 3.36 weeks, respectively. The mean cumulative dose of MTX in all cases was 231.1 ± 176.1 mg without any major side effects. Conclusion: MTX is a safe therapeutic option in severe refractory cases of childhood psoriasis if used with proper monitoring and follow-up.

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