Hello. Thank you for your question and welcome to HCM. I understand your concern. Well, there are several reasons why your ankles can be swollen. First, you mentioned that you have hypertension (high blood pressure). There are some drugs from the dihydropyridine fraction of calcium channel blockers (amlodipine, felodipine etc.) that cause this as a side effect. If this the case, I suggest you contact your physician and change to a drug from an another class of blood pressure-lowering agents. Second, it can be a sign of a failing heart. My opinion is that this is not the case. However, I would recommend an echocardiogram, to assess the motility and function of the heart muscle, as well as the functioning of heart valves. Third, it can be a sign of some sort of damage to the kidneys. Have you ever suffered from kidney stones or other kidney disease? Hereby, I recommend that you get these tests: urea, creatinine, glomerular filtration rate, microalbuminuria. I hope I was helpful. Take care and feel free to ask again. Good day.