| Ageing |
|
Reduction of interest
Delay in arousal
Retarded ejaculation and delayed female orgasm, etc. |
| Neurological |
|
Spinal injuries and cord compression
Multiple sclerosis
Brain diseases (tumours and cerebrovascular accidents)
Peripheral neuropathy
Autonomic neuropathy (e.g. in diabetes), etc. |
| Hormonal |
|
Pituitary tumours
Loss of testicles
Post-menopausal problems in vaginal walls |
| Vascular |
|
Atheroma and "pelvic steal" syndrome
Damage to arterioles (e.g. in diabetes)
Leakage from penile veins, etc. |
| Pelvic problems |
|
Vaginitis
Fibroids, cysts, tumours and constipation
Salpingitis and pelvic infections
Pelvic injuries, etc. |
| Medications |
|
Antipsychotics (hyperprolactinaemia)
Benzodiazepines?
Beta-blocker (e.g. propranolol lowers testosterone)
Antidepressants
Alcohol and other substances of abuse, etc. |