Sir, I am 20 years old. I am very weak in terms of...

Treatment of Erectile dysfunction :
Erectile dysfunction is one of the problems that trouble people and stress and anxiety up to depression. First of all it's recommended to see an internist for medical examination to detect the presence of any disease and treat it if it exists. In some cases of prostate enlargement, treatments such as tamsulsin are prescribed, and in cases of diabetes The blood sugar rate must be controlled. Some meds can be used to enhance erection, such as Tadalafil after consulting a specialist doctor and excluding any heart problems. Furthermore, It is also recommended to exercise regularly to stimulate blood circulation, follow a healthy diet and eating seafood and nuts and get enough rest and sleep at night.
Diagnosis:
History and clinical medical examination by the internist. Complete blood count analysis to detect infections. Semen analysis to detect or exclude infection in the prostate. Blood sugar test should be done to rule out diabetes. Testosterone test might also be done in some cases to ensure that there is no disturbances in their blood level

Causes of erectile dysfunction:
- Psychological stress 
- Over masturbation
- Diabetes Mellitis
- High blood pressure
- Testosterone deficiency
- Other hormonal disorders such as high prolactin
- Heart failure
- Renal failure
- Others
Recommendation:
It's recommended to see your family doctor for further assessment and management.