Nikolas
Created page with "<section begin="urology" />'''Erectile dysfunction''' (ED) is the persistent inability to achieve and/or maintain a sufficient erection. It usually causes significant psychosexual morbidity, decreased self-esteem, anxiety, and depression, which might worsen the ED, causing an evil cycle. == Epidemiology == * Affects 50% of men aged 40 – 70 * Prevalence increases with age == Physiological erection == * Flaccid penis ** Sympathetic nervous system predominates ** Cav..."