As the name suggests, erectile dysfunction is the failure to maintain or develop 
adequate erection necessary
                                for penetration during sex thereby affecting one's sexual life. Though erection might be affected temporarily in times
                                of stress or too much indulgence in alcohol, it is the recurrent or continuous inability to erect that needs immediate attention.
                                ED could be due to medical or psychological reasons. However, both are inter-related as ED can, in turn,
                                cause performance anxiety or stress leading to psychological problems.
                                Erection is achieved when nerve endings release neurotransmitters that cause dilatation of arteries
                                of the penis leading to extra blood flow to the area or penile engorgement. Thus, if the nerve endings
                                are damaged due to some underlying health condition or arteries are clogged, it prevents the penis from
                                erecting resulting in ED. Common medical conditions that may result in ED include diabetes, hypertension,
                                high cholesterol, nerve disorders, spinal injury, drug or alcohol abuse. Psychological causes include
                                stress, anxiety, fear of getting intimate, any guilt, depression, relationship issues etc.