high blood pressure
"Suffered for a year with leg exercise-induced pain, severe. They worked me up for knee damage, venous and arterial disease, spine problems, all for naught. Finally, in an unrelated change, I stopped taking Losartan. Leg pain was mostly gone in 3 days and totally gone in 10 days. So one doctor made me sick, 4 doctors  failed to find the answer, but luck intervened on my behalf. Leg/back pain occurs in up to 10% of users, but 4 doctors never suggested this as a cause. If ours (USA) is the best medical system in the world, God help us!"