benign prostatic hyperplasia
"I am 63 years old and have BHP which I controlled effectively for several years with Flomax and that family of medicines.  However, about 8 months ago, I began to suffer severe vertigo.  After several thousands of dollars of tests from a variety of specialists, I quit taking Doxazosin and that family of medicines and switched to Avodart.  The vertigo went away within a few days.  It took Avodart about a week to kick in and it is not as effective at improving flow as the others, but I can sleep all night without getting up.  However, as others have noted my libido plummeted to zero and I am not on testosterone replacement.  The two counteract each other and I just need to find the right mix that I am willing to live with."