title: On call. When I saw my doctor on my 73rd birthday, my only complaint was that I've been having trouble with my erections over the past year. I was surprised that my doctor didn't do any blood tests beyond the usual battery, and he didn't refer me to a specialist. Instead, he gave me a prescription for Viagra. The pills are working fine, but should I have tests to find out what's wrong?
authors.forename: Harvey B
authors.initials: HB
authors.lastname: Simon
mesh_terms: D015106:3',5'-Cyclic-GMP Phosphodiesterases / Q000627:therapeutic use; D000368:Aged; D007172:Erectile Dysfunction / Q000097:blood / Q000188:drug therapy / Q000209:etiology*; D006801:Humans; D008297:Male; D008487:Medical History Taking / Q000592:standards*; D010879:Piperazines / Q000627:therapeutic use; D011687:Purines; D000068677:Sildenafil Citrate; D013450:Sulfones; D014665:Vasodilator Agents / Q000627:therapeutic use
chemical_list: D010879:Piperazines; D011687:Purines; D013450:Sulfones; D014665:Vasodilator Agents; D000068677:Sildenafil Citrate; D015106:3',5'-Cyclic-GMP Phosphodiesterases