• Erectile dysfunction occurs when the blood flow to the penis is decreased or the muscles of the penis do not relax. This could be the result of an underlying physical or psychological condition, or both
• Physical conditions:
• Trauma or injury to the penis or spinal cord
• Diseases of the penis
• Diseases of the heart or blood vessel atherosclerosis, myocardial infarction
• Obesity
• High cholesterol
• High blood pressure
• Diabetes
• Metabolic syndrome – a condition of having High blood pressure, High insulin and cholesterol levels
• Neurological conditions such as Parkinson's disease, Multiple sclerosis
• Certain medications like antidepressants, antihistamines
• Tobacco and alcohol use
• Sleep disorders
• Treatments for organs in pelvic area
• Psychological conditions:
• Depression
• Anxiety
• Stress

Complications generally result from unsatisfactory sexual life

• Stress
• Low self-esteem
• Problems in relationship