Morning erection sometimes have, sometimes no may be a normal physiological phenomenon, and sleep quality, mental state, there may also be pathological factors, such as prostatitis. 1. Morning erection is a normal physiological phenomenon caused by the reflex action of internal organs in the body. If men rest at night with poor sleep quality, or stay up late, etc., it will lead to the body being in a state of fatigue early in the morning, which may affect the appearance of morning erection. 2. When men’s mental state is poor, it will also lead to morning erections in the early morning. In addition, as men age, their sexual function gradually deteriorates, which may also cause morning erections to be absent at times. 3. Prostatitis can lead to symptoms such as urinary urgency, frequent urination, incomplete urination, and painful urination, and in severe cases it can lead to sexual dysfunction and sometimes absent morning erections. If you have a problem with morning erections, you don’t need to worry too much, but you can go to the hospital for a checkup to rule out the disease.