Clinical features: It is a chronic granulomatous disease caused by Mycobacterium leprae, an acid and alcohol fast bacillus that has a very slow multiplication. Leprosy is the commonest cause of peripheral neuritis in the world. The major clinical features therefore include hypopigmented anaesthetic macula or nodular and erythematous skin lesions and nerve thickening. It is classified into five different levels according to nuclear of bacilli found in the lesion.