Is it normal to have morning sickness?

Morning erection is normal if there is no morning erection in a short period of time, and it will not cause harm to the body. Morning erection is mainly related to the reasons for holding urine and sympathetic nerve stimulation. If the patient does not hold urine sometimes, it may not show morning erection, which is normal. If there is no morning erection for a long time, it may represent a problem with the body. It may be related to overwork, or the patient is in a chronic disease, such as hypertension or diabetes, which may cause long-term lack of morning sickness.