The IADVL India biologics-in-psoriasis literature (IDOJ + PMC 2017) defines the practical Indian-context protocol: biologics currently available include etanercept, infliximab, itolizumab, and secukinumab, with biosimilars (notably adalimumab biosimilars from Indian manufacturers, the originator is not currently in India) playing a growing role.
IADVL dosing guidance: secukinumab 300 mg subcutaneous at weeks 0, 1, 2, 3, then 300 mg every 4 weeks from week 4, indicated for moderate-severe plaque psoriasis and psoriatic arthritis. Itolizumab (Indian-developed anti-CD6 mAb) 1.6 mg/kg IV every 2 weeks × 12 weeks, then every 4 weeks up to 24 weeks.
The dominant barrier in Indian practice: a cross-sectional IADVL survey found 88% of Indian dermatologists report that removing cost barriers would meaningfully alter their biologic prescribing pattern, current under-use of biologics in India is economic, not clinical. DermaVue Kochi's prescribing pattern is graded: conventional systemics (methotrexate 15-25 mg/week, cyclosporine 3-5 mg/kg/day, oral acitretin) as first-line for moderate-severe; biologics for inadequate response, after explicit counselling on long-term cost commitment.
Environmental modulation: a PMC 2025 systematic review confirmed PM2.5 exposure exacerbates psoriasis through oxidative-stress-mediated keratinocyte activation. Kochi's PM2.5 at 3× WHO annual safe limit (CPCB Vyttila monitoring station peak 51 µg/m³) is documented as a disease-modifying factor in our patient cohort, outdoor commuters and Cochin Shipyard/industrial workers face higher flare frequency.