What should I do if one testicle is larger than the other?
In general, a size difference between the two testicles may be caused by age-related factors, natural variation, epididymitis, varicocele, or hydrocele, and can be improved through general treatment, medication, or surgical intervention. If discomfort occurs, timely medical consultation is recommended for appropriate treatment under a physician's guidance. Detailed analysis is as follows:

1. Age-related factors: With aging, subtle changes in testicular size may occur, especially around puberty, due to hormonal fluctuations. One testicle may temporarily appear larger or smaller. This condition is usually temporary. Maintaining a healthy lifestyle, avoiding excessive anxiety, and regular physical examinations are recommended.
2. Natural variation: Many organs and tissues in the human body are not completely symmetrical; one testicle may naturally be slightly larger or smaller than the other. This typically does not affect reproductive health. No specific treatment is usually required, but regular self-examination of the testicles and monitoring for any abnormal changes are recommended.
3. Epididymitis: Bacterial infection causing inflammation of the epididymal tissue can lead to localized swelling and pain, making the affected testicle appear larger. Treatment with medications such as levofloxacin hydrochloride capsules, cefixime tablets, or ciprofloxacin hydrochloride tablets under a physician's guidance is recommended.
4. Varicocele: In cases of varicocele, impaired venous blood return in the spermatic cord causes venous dilation, leading to testicular enlargement, possibly accompanied by pain or discomfort. Surgical treatments such as varicocelectomy or minimally invasive procedures are recommended according to medical advice.
5. Hydrocele: The tunica vaginalis is a membrane surrounding the testicle. Excessive fluid accumulation within this membrane can cause swelling of one testicle. Surgical interventions such as incision and drainage or tunica vaginalis flap procedures are recommended under medical supervision to reduce fluid accumulation and prevent recurrence.
It is recommended to maintain a healthy lifestyle, including a balanced diet, moderate exercise, and sufficient rest, to support overall health and normal function of the reproductive organs.