PD patients, untreated with medication, are usually able to attain an erection. This reflects adequate blood flow through the arteries to the penis, with appropriate filling, and hardening of the erectile tissue. However, the PD patient is unable to maintain an erection. And, PD patients may be unable to attain an erection. Almost any drug, prescription, or non-prescription, whether obtained in a pharmacy or health food store, may aggravate or cause impotence.
Some drugs cause impotence in hours, and some in weeks.
If there is a temporal relationship between taking a drug, and impotence, the drug should be stopped. Impotence associated with their use invariably results from PD related autonomic nervous system malfunction. Parkinson's Disease, Depression, and Impotence Depression is common among PD patients. Depression may aggravate or cause impotence. Conversely, impotence may aggravate or cause depression.