Under what circumstances can a man's testicles contract

Men's testicles will contract under the circumstances of external stimulation, orchitis, varicocele, etc.

1. Men are stimulated by external stimulation in

a low temperature environment, resulting in testicular cold stimulation, may cause vasoconstriction, local blood flow abnormalities, resulting in testicular contraction.

2. Orchitis

pathogenic microbial infection can cause orchitis, inflammatory factors on testicular tissue stimulation, can cause testicular congestion, edema, local blood flow affected, will also cause testicular abnormal contraction.

3. Varicocele

venous valve dysfunction, venous reflux disorders and other reasons can cause varicocele, causing testicular blood supply deficiency, testicular ischemia, hypoxia, may cause testicular atrophy.