Pain in the male genital area has a wide range of causes, from infections and structural problems to conditions that originate elsewhere in the body entirely. Some are minor and resolve on their own, while others require emergency treatment within hours. The location, onset, and character of the pain are the most important clues to what’s going on.
Testicular Torsion: The Emergency
Testicular torsion happens when the spermatic cord twists, cutting off blood flow to the testicle. It causes sudden, severe pain on one side of the scrotum, often accompanied by nausea or vomiting. This is a surgical emergency. If blood flow is restored within 6 hours, the testicle is saved about 97% of the time. Between 7 and 12 hours, that drops to 79%. After 24 hours, the salvage rate falls below 20%.
Torsion is most common in adolescents and young men, though it can happen at any age. One key physical finding is the loss of the cremasteric reflex, which is the testicle’s normal upward movement when the inner thigh is stroked. In boys 11 and older, this test catches torsion with 100% sensitivity. Ultrasound can confirm the diagnosis, but if torsion is strongly suspected based on symptoms and exam, surgery proceeds without waiting for imaging.
Infections: Epididymitis and Orchitis
Unlike torsion, infections in the testicle or the coiled tube behind it (the epididymis) typically come on gradually over days rather than minutes. The pain builds alongside swelling, warmth, and sometimes fever or burning during urination. In men between 14 and 35, sexually transmitted bacteria are the most common culprits. In older men, the infection is more often caused by common urinary tract bacteria.
A key distinguishing feature from torsion is that the testicle sits in its normal anatomical position and the cremasteric reflex remains intact. The affected side is swollen and tender, but the pain often improves when the scrotum is elevated, which is the opposite of what happens with torsion.
Varicoceles
A varicocele is an enlargement of the veins within the scrotum, similar to a varicose vein in the leg. It typically causes a dull, aching, or throbbing pain that worsens after standing for long periods, exercising, or straining. Many men describe it as a feeling of heaviness. The pain usually improves when lying down.
Varicoceles are graded on a three-point scale: grade 1 can only be felt when bearing down, grade 2 is easily felt by hand, and grade 3 is visible through the skin. They occur far more often on the left side due to the anatomy of the veins draining that testicle. When treatment is needed, the character of the pain actually predicts the outcome. Men who describe their pain as dull have nearly a 100% success rate with treatment, while those with sharp pain respond less predictably.
Inguinal Hernias
An inguinal hernia occurs when tissue pushes through a weak point in the abdominal wall near the groin. In men, the hernia can extend down into the scrotum, causing it to look swollen or feel heavy. The pain is typically a burning, aching, or pressure sensation in the groin or scrotum that gets worse with coughing, lifting, bending, or standing for a long time.
The hallmark sign is a visible or palpable bulge that increases in size when you strain and disappears when you lie down. If the bulge suddenly becomes firm, painful, and can’t be pushed back in, the hernia may be trapped (incarcerated), which requires urgent medical attention.
Chronic Pelvic Pain Syndrome
Chronic pelvic pain syndrome, sometimes called chronic prostatitis, accounts for roughly 90% of all prostatitis cases seen in outpatient clinics. It’s defined by pelvic pain lasting at least 3 months over a 6-month period, with no bacterial infection to explain it. The pain can show up in the perineum (the area between the scrotum and anus), the lower abdomen, the penis, the testicles, or all of these at once. Urinary symptoms and sexual dysfunction often accompany it.
The condition is frustrating for patients because there’s no single identifiable cause. The primary drivers appear to be tension in the pelvic floor muscles, psychological factors like depression, and a tendency toward pain catastrophizing, where the brain amplifies pain signals. Treatment usually involves physical therapy targeting the pelvic floor, stress management, and sometimes medications to relax muscles or reduce nerve sensitivity. It’s a slow process, but the condition is manageable for most men.
Peyronie’s Disease
Peyronie’s disease involves the formation of scar tissue (plaque) inside the penis, leading to curvature and pain. The acute inflammatory phase typically lasts 6 to 18 months, during which the penis may hurt during erections or even at rest. Pain is the defining feature of this early phase. In most men, it improves or resolves within 12 months of onset.
The condition then enters a stable phase where the curvature stops changing and pain fades, but the structural deformity may remain. During the acute phase, anti-inflammatory medications can help with pain. Treatments like low-intensity shockwave therapy have shown promise in reducing erectile pain and improving function during this period.
Referred Pain From Kidney Stones
Not all genital pain starts in the genitals. Kidney stones, particularly those lodged in the lower portion of the ureter (the tube connecting the kidney to the bladder), can cause pain felt primarily in the scrotum or testicle. This happens because the ureter and the genital area share the same spinal nerve pathways at the T10 through L2 levels, specifically through the genitofemoral and ilioinguinal nerves. Your brain sometimes misinterprets where the pain signal is coming from.
This type of referred pain can be misleading. Some men present with testicular pain as their only symptom, with no flank pain or blood in the urine to suggest a stone. If scrotal examination is completely normal but pain persists, imaging of the urinary tract can reveal the true source.
Testicular Cancer
Most testicular cancers present as a painless lump rather than pain alone. However, 30 to 40% of men with testicular cancer do experience a dull ache in the testicle or scrotum. The pain is rarely the sharp, acute type seen in torsion or infection. Nearly all testicular cancers are first identified by a mass that can be felt on the testicle itself, distinct from the surrounding structures.
Any firm, painless lump on the testicle warrants prompt evaluation, even in the absence of pain. A lump accompanied by a dull ache is no less concerning. Testicular cancer is highly treatable when caught early, with cure rates above 95% for localized disease.
How the Type of Pain Points to the Cause
The onset and character of pain are the most useful clues for narrowing down the cause. Sudden, severe pain that develops within minutes points toward torsion or, less commonly, a ruptured cyst. Gradual pain building over days suggests infection. A dull ache that worsens with activity and eases with rest is more typical of a varicocele or hernia. Chronic, diffuse pain lasting months without a clear trigger fits the pattern of pelvic pain syndrome.
Where the pain is located matters too. Pain isolated to one testicle raises concern for torsion, infection, or a mass. Pain that radiates from the groin into the scrotum is more suggestive of a hernia or referred pain from a stone. Pain spread across the perineum, lower abdomen, and genitals simultaneously is characteristic of chronic pelvic pain syndrome. Penile pain during erections, especially with a new curve, points to Peyronie’s disease.