What causes a man to ejaculate immediately after starting intercourse?

Generally, a man ejaculating shortly after intercourse may be caused by factors such as lack of experience and infrequent sexual activity, anxiety and tension, glans hypersensitivity, central nervous system neurotransmitters, or balanitis. It is recommended to seek timely medical advice, identify the cause, and follow medical guidance for treatment. The specific details are as follows:

1. Lack of experience and infrequent sexual activity: Men may feel psychologically tense and rush into sexual activity, leading to short sexual encounters. Both partners should enhance their understanding of sexual knowledge and improve communication and mutual understanding.

2. Anxiety and tension: Feelings of anxiety, nervousness, and strong self-esteem can increase psychological pressure in men, thereby affecting their sexual function and causing quicker ejaculation. This pressure may be particularly pronounced when facing a partner. Patients can attempt to control emotions and divert attention during sexual activity to prolong the duration of intercourse.

3. Glans hypersensitivity: In men with phimosis or long foreskin, the glans is continually covered by the foreskin with minimal exposure to the external environment, resulting in heightened glans sensitivity. During sexual activity, this increased sensitivity can lead to quicker ejaculation. Using a condom may help, as it can reduce glans sensitivity and prolong ejaculation time.

4. Central nervous system neurotransmitters: Chemical substances synthesized in the cell bodies of neurons in the central nervous system and stored in synaptic vesicles that transmit information from one neuron to another. Following penile erection during sexual activity, the central nervous system releases numerous neurotransmitters involved in ejaculation. If there is an issue with central nervous system neurotransmitters, it may lower the ejaculation threshold, leading to premature ejaculation. Patients can take medications such as vitamin B1 tablets, granisetron tablets, paroxetine hydrochloride tablets, etc., under a doctor's guidance, which have the effect of regulating nerves and treating depression.

5. Balanitis: Balanitis may be associated with factors such as infection or trauma, leading to symptoms such as redness, swelling, ulcers, and erosion in the glans area, increasing glans sensitivity, affecting ejaculation, and often accompanied by glans pain. Follow medical advice for drug treatment, such as miconazole nitrate cream, clotrimazole cream, erythromycin ointment, etc., to control the infection.

Patients can enhance physical exercise in daily life, as appropriate exercise can improve physical fitness and enhance sexual function. Maintain a balanced diet and consume more nutrient-rich foods, such as cabbage, apples, and oats.