What Causes Numbness in the Penis?

Penile numbness results from nerve damage, reduced blood flow, or pressure on nerves. Possible causes include diabetes-related nerve damage, prolonged pressure from sitting or cycling, spinal cord injuries, and medication side effects, including sexual side effects from some antidepressants. Pressure or trauma affecting nerves in the perineum—the area between the genitals and anus—can cause numbness. Symptoms from pressure are often temporary, but persistent symptoms should be evaluated. Vascular issues such as atherosclerosis reduce blood circulation to penile tissues. Multiple sclerosis, herniated discs, and pelvic surgery may damage nerves controlling sensation. Vitamin B12 deficiency can damage nerves and may contribute to numbness. A clinician can assess whether hormonal changes or another condition is affecting sexual function or sensation. Seek medical evaluation if numbness persists or occurs with pain or erectile problems. Get urgent medical care for sudden penile or groin numbness, especially with new leg weakness, severe back pain, loss of bladder or bowel control, or an inability to urinate.