ED is defined as the persistent inability to attain and/or maintain an erection that is sufficient for sexual performance. The keyword within this definition is persistent. If an occasional failure to obtain an erection occurs, it’s likely nothing to worry about. If it happens more often, then ED could be present; if so, visiting a healthcare professional is strongly recommended.
I have to disagree with your statement “ED could be the cause.”
ED is not a disease. It’s a symptom of an underlying problem, which may be physical or psychological. The underlying problem is the cause.
Sometimes ED is caused by something serious, like heart disease or diabetes. That’s why it’s so important for men to see a doctor if they are experiencing erectile dysfunction.