My father got some heart problem in February 2013 and doctors suggested him for pacemaker and he had a pacemaker fitted in April 2013. In May 2014, he got infection at the place where pacemaker got fitted. So doctors took that pacemaker out and fitted another pacemaker on other side of shoulder. In September 2015, my father suffered from brain stroke and went through its treatment. He also got paralysis in his left part of body. Presently he is taking Acitrom (3 mg), arvast (10 mg) and Amitone (10 mg). Last Monday he felt little pain in knee of his right leg and later his whole leg swelled with pain. 2 days back he got some black spot in his leg which is increasing fast. Please suggest to whom we should consult.