## Classification and MDT Regimen Selection The clinical presentation—multiple hypopigmented macules with sensory loss and high AFB load (4+)—is consistent with **lepromatous leprosy (LL)** or **borderline lepromatous leprosy (BL)**. ### WHO MDT Regimens for Leprosy | Leprosy Type | Duration | First-Line Regimen | Drugs | |---|---|---|---| | **Paucibacillary (PB)** | 6 months | Standard PB-MDT | Rifampicin + Dapsone + Clofazimine | | **Multibacillary (MB)** | 12 months | Standard MB-MDT | Rifampicin + Dapsone + Clofazimine | | **LL/BL (High bacillary load)** | 12 months | Standard MB-MDT | Rifampicin + Dapsone + Clofazimine | **Key Point:** The presence of high AFB load (4+) classifies this as **multibacillary leprosy**, requiring the triple-drug regimen: **Rifampicin + Dapsone + Clofazimine**. ### Role of Each Drug 1. **Rifampicin** — Bactericidal; most potent anti-leprosy agent; given monthly supervised dose (600 mg) 2. **Dapsone** — Bacteriostatic; given daily unsupervised (100 mg) 3. **Clofazimine** — Bacteriostatic; anti-inflammatory; given daily unsupervised (50 mg); prevents resistance **High-Yield:** AFB smear grade ≥2+ or >5 lesions = **Multibacillary** → Always use **triple-drug MDT (RIF + DAP + CFZ)**. **Clinical Pearl:** Clofazimine is essential in MB leprosy to prevent drug resistance and reduce relapse rates. Monotherapy or dual therapy is inadequate and leads to treatment failure. ### Why Not Ofloxacin + Minocycline? These are **alternative second-line agents** used only when: - Dapsone intolerance (G6PD deficiency, severe hemolysis) - Clofazimine contraindication (pregnancy, severe GI intolerance) They are **never first-line** for MB leprosy.
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