The erection problems are very common for men which can occur due to so many reasons. There can be psychological, physical or both reasons for these problems.

The erectile dysfunction can be due to physical causes like breakdown or damage of sequences of events which lead to an erection. There is involvement of this sequence in nerve pulses in brain, spine and penis. There is also effect of these on the fibrous tissues, veins and arteries in and near the corpora cavernosa. The arteries, muscles and surrounding tissues of penis are affected by the breakdown or damage of sequence which can result into a disease. There can be some diseases caused by the erectile dysfunction which are as follows.

Diabetes

There can be nerve and artery damage due to diabetes which can cause difficulty for erection. Erectile dysfunction is common in 35% to 50% men with diabetes. There are some degrees of erectile dysfunction in men with diabetes and the risks increase with age.

Kidney disease

Kidney disease can be due to chemical changes in the body due to which hormones, nerve function, circulation and energy level is affected. The libido or sexual ability is also affected due to these changes. The erectile dysfunction can also be caused due to drugs taken for kidney disease.

Neurological diseases

Nervous system is very important for people to achieve and maintain erection. Many people have this problem with diseases like stroke, multiple sclerosis (MS), Alzheimer's disease, Parkinson's disease and spinal cord injuries which can cause erectile dysfunction. This problem occurs due to interruption in the transmission of nerve impulse between brain and penis.

Vascular disease

Blood vessels are affected in the vascular diseases like atherosclerosis (hardening of the arteries), hypertension, and high cholesterol. 70% of the physical causes of the erectile dysfunction are due to these diseases. The blood flow is restricted to the heart brain and penis in the erectile dysfunction.

Prostate cancer

Erectile dysfunction can not be due to prostate cancer but it s treatment can cause erectile dysfunction like radiation, surgery or hormonal manipulation.

There can be other causes of the erectile dysfunction as well along with physical causes.

Surgery

The nerves and tissues are removed in the surgery for treatment of different diseases like prostate cancer and bladder cancer around the affected areas which can cause erectile dysfunction. These problems of surgery can be temporary lasting 6 to 18 months as well as permanent which can damage nerves and tissues around the penis. There will be treatment required to get an erection in this case.

Injury

Erectile dysfunction can also be caused by injuries to the pelvis, bladder, spinal cord, and penis as these injuries require surgery.

Hormonal imbalance

The sexual stimulation is also affected by the imbalance of different hormones like thyroid hormones, prolactin and testosterone. There can be kidney disease, liver disease or tumor of the pituitary glands with imbalances of hormones.

Venous leak

The erection can not be maintained if the blood can not be prevented in the penis from leaving the penis during erection. It is known as venous leak and it can be due to injury or disease.

Tobacco, alcohol or drug use

The blood vessels can be damaged and blood flow can restrict to the penis due to tobacco, alcohol and drugs which can cause erectile dysfunction. Most of the people can have the erectile dysfunction due to smoking.