Methotrexate and Prednisolone Study in Erythema Nodosum Leprosum

Inclusion Criteria:: ALL OF THE FOLLOWING SIX CRITERIA MUST BE MET IN ORDER FOR AN INDIVIDUAL TO BE ELIGIBLE (ONLY ONE OF 6A TO 6D NEED BE MET): 1. Individuals who diagnosed with leprosy complicated by ENL 2. Individuals with ENL aged 18-60 years old 3. Individuals with ENL deteriorating symptoms 4. Individuals with 10 or more tender, papular or nodular ENL skin lesions 5. Individuals with an EESS score of at least 9 6. Individuals with ENL on: 1. No current anti- ENL treatment 2. Prednisolone up to 30mg per day (if ACUTE) or Prednisolone 10-30mg (inclusive) per day (if RECURRENT/ CHRONIC) or equivalent alternative corticosteroid dose OR 3. Thalidomide or other non-steroidal anti-ENL medication OR 4. A combination of prednisolone (up to 30mg) and another non-steroidal anti-ENL medication (thalidomide, clofazimine, azathioprine, pentoxifylline, ciclosporin, minocycline) Exclusion criteria: 1. Individuals who were first diagnosed with ENL more than 4 years prior to enrolment 2. Individuals less than 18 years old or older than 60 years 3. Individuals weighing less than 35kg 4. Individuals with 9 or fewer tender, popular or nodular ENL skin lesions 5. Individuals with an EESS score of 8 or less 6. Women of child bearing capacity who decline to use two forms of adequate contraception and men who decline to use two forms of adequate contraception 7. Pregnant or breastfeeding women 8. Individuals with recurrent or chronic ENL who deteriorate on a dose of prednisolone less than 10 mg or more than 30 mg 9. Individuals who have taken methotrexate by any route for the last 12 weeks 10. Individuals with a hypersensitivity to methotrexate or a recognised contraindication ( please see Methotrexate information sheet) 11. Individuals currently diagnosed with Type 1 reaction or Lucio's phenomenon 12. Individuals with the severe abnormalities in screening investigations 13. Positive serology for HIV, Hepatitis B or C 14. Evidence of tuberculosis or pulmonary fibrosis 15. A history of chronic liver disease or excessive alcohol or illicit substance consumption 16. Individuals with severe inter-current infections, uncontrolled diabetes, active peptic ulcer disease, untreated malignancy 17. Individuals unable to attend regularly for assessment or monitoring