Performing a testicular self-exam doesn't pose any direct risks. However, if you notice something unusual that concerns you, the follow-up exams might lead to unnecessary worry and medical tests.
For example, if you discover a suspicious lump, you might have tests to determine its cause. This could involve blood tests, ultrasound exams or a procedure to remove testicle tissue for examination (biopsy). If the lump is noncancerous (benign), you might feel that you've undergone an invasive procedure unnecessarily.