Testicular sebaceous cysts are benign, fluid-filled lumps that develop within the scrotum. Caused by blocked sebaceous glands due to hormonal influences, these cysts often remain asymptomatic. However, they can occasionally cause pain or discomfort when inflamed or infected. Diagnosis involves physical examination, medical history review, and ultrasound imaging. Treatment options include antibiotics for infections, aspiration to drain cyst fluid, and surgery in cases of severe pain or unsuccessful aspiration.