Yes Leprosy has the features explained by you. The bacterium once effects the nerves. There is loss of sensation and eventually the affected person loses figure. He doesn?t feel the sensations and during injury he doesn,t care for that because of no pain. Gradually the breaking of toes or fingers take place. This is only in late stages. Your know person has early stage leprosy we suppose. It should be immediately treated with a long course of anti lepra drugs. The affected person can also shed the bacterium through cough, sneeze etc. Hence the air is contagious. Being a stigma the person is ill-treated. He in fact needs lot of family and social support. The medication should be continued till the doctor asks him to stop. Treatment of early stage of leprosy includes three antibiotics dapsone, rifampin, and clofazimine for treatment, which takes six months to a year or more. During the course of treatment, the body may react to the dead bacteria with pain and swelling in the skin and nerves. This is treated with pain medication, opioids and steroids.