My mum is at the age of 82, for the last two years she is having her right leg swollen, doctor advised her to change the medicine for HBP, ie from nifedipine/propranolol to Co- Diovan and then to Diovan, but still no improvement. I wonder is there any other possible organ that cause the swollen and painfull in her leg, now she can hardly walk. Other than medicine and heart, any other possibility ?