Leprosy
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Transcript of Leprosy
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Leprosy in Indonesia
Fadel Muhammad Garishah, MDDepartment of General Medicine
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Overview of Leprosy
Leprosy is a disease caused by Mycobacterium leprae, a bacterium which primarily affects the skin and peripheral nerves.
Mode of transmission is considered to be air-borne, through droplets discharged from the respiratory tract of untreated infectious cases
The disease causes stigma and those affected can be victims of discrimination and often displacement.
Physical and neurological damage may be irreversible even if cured.
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Epidemiology
In 2011, the Ministry of Health Republic of Indonesia reported 20.023 new leprosy cases or 8.3 in 100,000 population
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Mycobacterium leprae
• Mycobacteria genus
• Acid-Fast Bacili
• Difficult to be cultured; Inoculated in Armadillo skin
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Spectrum of Disease
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Immunity Profile to Disease Outcome
Leprosy
Lepromatous
Borderline
Tuberculoid
HumoralImmunity
CellularImmunity
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Treatment
Leprosy
Paucibacillary (PB)
Multibacillary (MB)
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Paucibacillary (PB): the number of M. leprae in the body is small (less than 1 million) and a skin smear test is negative. The patient presents five or fewer skin lesions. Most cases of leprosy are PB.
Multibacillary (MB): M. leprae can multiple in the body almost without any check and is thus present in high numbers. The bacillus has likely spread to almost all areas of skin and peripheral nerves. A skin smear test is positive and the patient presents more than five skin lesions.
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Bacterial Index
Acid Fast Bacilli Bacterial Index> 1000 > immersion field 6 +100 – 1000/field 5 +10 – 100/field 4 +1 – 10 3 +1 – 10/10 field 2 +1 – 10/100 1 +0/100 0
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Skin Lesion: Hypopigmented Hypoesthesia Maculae
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Disability
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Diagnostic
Hypopigmented or reddish patches with definite loss of sensation
Thickened peripheral nerves Acid-fast bacilli on skin smears or biopsy material
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Pharmacology
Dapsone (Bactericidal) by preventing of formation of folic acid, inhibiting bacterial growth.
Rifampicine Inhibits DNA-dependent bacterial RNA polymerase.
Clofazimine (Lamprene) Inhibits mycobacterial growth, binds preferentially to mycobacterial DNA.
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After 6 months MDT Tx
However, damaged nerves and tissues cannot regrow. Thus, if left untreated for too long, disfigurment from leprosy can be permanent, unless it can be repaired with reconstructive surgery.
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PB Single Lesion
Rifampicin 600 mg Ofloxacin 400mg Minocycline 100 mg
Single Dose
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PB >5 Lesions
6 – 9 months Day 1 Rifampicin 600mg and Dapson 100 mg Day 2 – 28 Dapson 100 mg
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MB
12-18 months Day 1: Rifampicin 600 mg, Dapson 100 mg/
Clofazimine 300 mg Day 2 -28: Dapson 100 mg, Clofazimine 50mg
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Leprosy Reactions
Reversal reactions Erythema Nodosum Leprosum
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Reversal Reaction
Mild: analgesics, sedatives, Chloroquin base 150mg TID 3-5 days
Severe: Prednison/prednisolon/analgesics, sedatives
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Prednisolon 10 mg TID or
Week 1 and 2 : 40 mg/day Week 3 and 4: 30 mg/day Week 5 and 6: 20 mg/day Week 7 and 8: 15 mg/day Week 9 and 10: 10 mg/day Week 11 and 12: 5 mg/day
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Prednison 40-60 mg/day
2 weeks I 30 mg/day (1x 6 tab) 2 weeks II 20 mg/day (1x4 tab) 2 weeks III 15 mg/day (1x3 tab) 2 weeks IV 10 mg/day (1x2 tab) 2 weeks V 5mg/day (1x1 tab)
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Erythema Nodosum Leprosum
Thalidomide 100-400mg/day Prednisolon
30-40 mg/day 1-2 weeks Decrease 5-10 mg/2 weeks
Clofazimine 300mg (3x100mg) 1 months 4-6 weeks, no more than 3 months Decrease 2 x 100 mg/ day 1 months 1 x 100mg/day 1 months 50 mg/day