Right-sided groin pain in men stems from a wide range of causes, from common muscle strains and inguinal hernias to less obvious problems like nerve entrapment, hip joint disorders, and even referred pain from the appendix. The groin is a crossroads where muscles, nerves, blood vessels, and the spermatic cord all converge in a small area, which is why pinpointing the source can be tricky. Understanding what structures live in this region and how they can go wrong gives you a much better shot at recognizing when something needs urgent attention versus when rest and time will do the job.
Inguinal Hernias Are the Classic Culprit
When most people think of groin pain, they picture a hernia, and for good reason. Inguinal hernias are the most common type of abdominal wall hernia in men, and they occur on the right side slightly more often than the left. An inguinal hernia happens when tissue, usually a loop of intestine or abdominal fat, pushes through a weak spot in the lower abdominal wall near the inguinal canal. You might notice a visible bulge that gets worse when you stand, cough, or strain, along with an aching or burning sensation in the groin.
There are actually several types of groin hernia that can coexist. A case report described a 74-year-old man who presented with significant pain and a bulge protruding into his right scrotum; surgical exploration revealed not just one but four simultaneous hernias on the right side: a direct inguinal, an indirect inguinal, a femoral hernia, and an obturator hernia.1PubMed Central. Robotic Repair of Right-Sided Direct Inguinal, Indirect Inguinal, Femoral, and Obturator Hernias (Quadruple Groin Hernias) That’s an extreme example, but it illustrates how different weak points in the groin floor can all give way. The key practical takeaway: a bulge that you can push back in is usually an inguinal hernia, but if the bulge becomes hard, painful, and impossible to push back, you may have a strangulated hernia, and that’s a surgical emergency.
Musculoskeletal Injuries and Athletic Pubalgia
If there’s no bulge and the pain came on during physical activity, the problem is more likely muscular or tendinous. The groin is anchored by a complex web of muscles and tendons. The rectus abdominis, the adductors of the inner thigh, the external oblique, and the conjoint tendon all converge around the pubic bone, sharing a common fibrous sheet called the pubic aponeurosis.2PubMed Central. Groin Injuries (Athletic Pubalgia) and Return to Play When one or more of these structures is strained, torn, or chronically inflamed, you get what sports medicine doctors call “athletic pubalgia,” sometimes loosely called a sports hernia despite involving no actual hernia.
Adductor injuries deserve special mention because the adductor longus muscle, which runs along the inner thigh, is one of the most frequently injured structures in athletes who do a lot of kicking, cutting, or rapid direction changes. These injuries range from mild tendon inflammation to partial or complete tears, and they carry a high risk of recurring if not properly rehabbed.3PubMed Central. Diagnostic Musculoskeletal Ultrasound in the Evaluation of Adductor Longus Injuries: Implications for Rehabilitation Providers Pain from an adductor problem typically worsens when you squeeze your legs together or try to kick something.
Another musculoskeletal cause that gets overlooked is osteitis pubis, an inflammatory condition of the pubic symphysis, the joint at the front of the pelvis. It was originally described in patients recovering from urologic procedures, but it also affects athletes.4PubMed Central. Osteitis pubis: A rare cause of suprapubic pain In severe cases, the inflammation can spread into the surrounding muscles and even cause nerve problems. One report described a 42-year-old amateur football player whose right-sided groin pain turned out to be osteitis pubis with associated inflammatory myositis and bursitis spreading into the adductor and iliopsoas muscles. MRI showed bone marrow swelling at the pubic symphysis along with fluid collections in the surrounding soft tissues.5PubMed Central. Extended Inflammatory Osteitis Pubis With Associated Myositis and Femoral Neuropathy in an Amateur Football Player: A Case Report
Hip Joint Problems That Masquerade as Groin Pain
The hip joint sits deep in the groin, and problems inside the joint routinely produce pain that feels like it’s coming from the inguinal crease rather than the hip itself. One condition that clinicians frequently miss is femoroacetabular impingement, where extra bone along the femoral head or the hip socket causes abnormal contact during movement. This pinching can damage the labrum, the ring of cartilage that lines the socket. A report described a 19-year-old male who twisted his right hip during a football match and was eventually diagnosed with femoroacetabular impingement and a labral tear, a diagnosis the authors noted is “frequently missed” in patients with chronic groin pain.6Nederlandsch tijdschrift voor geneeskunde. Femoroacetabular impingement: frequently missed in patients with chronic groin pain
If your groin pain gets worse when you flex the hip deeply, sit for long periods, or pivot on the leg, a hip joint issue is worth investigating. Pain from the hip tends to be felt deep in the front of the groin and sometimes radiates toward the buttock. An X-ray can show bony abnormalities, but MRI is often needed to see labral damage or cartilage wear.
Nerve Entrapment and Post-Surgical Neuralgia
Nerves running through the groin can become trapped, irritated, or damaged, producing pain that burns, stings, or shoots into the inner thigh or genital area. Ilioinguinal neuralgia is one of the most recognized forms. It causes burning or stabbing pain along the inguinal crease and upper medial thigh that often radiates to the genitals. The condition most commonly develops from nerve entrapment, direct surgical injury, or scar tissue formation after procedures like inguinal hernia repair, appendectomy, or other pelvic operations.7PubMed Central. Practical Approach Ultrasound-Guided Radiofrequency Ablation of the Ilioinguinal Nerves to Treat Ilioinguinal Neuralgia: A Description of a Novel Approach
Neuropathic groin pain appears to affect the right side somewhat more often than the left. A 20-year retrospective study of patients who underwent surgery for neuropathic groin pain found that about half of operations were performed on the right side, roughly 38% on the left, and about 11% bilaterally.8PubMed Central. Systematic Approach to the Management of Neuropathic Groin Pain: A 20-year Retrospective Cohort Study This slight right-side predominance likely reflects the fact that more inguinal hernia repairs and appendectomies, both common triggers for nerve injury, happen on the right.
Post-surgical groin pain after hernia repair is a well-documented problem. A large study reviewing over 9,600 inguinal hernia repairs found that a small but meaningful percentage of patients developed pain severe enough to require referral to a specialized chronic pain clinic. The rate varied by surgical technique: about 0.7% after open repair, roughly 1.2% after one laparoscopic method, and about 3% after another.9PubMed. The incidence and success of treatment for severe chronic groin pain after open, transabdominal preperitoneal, and totally extraperitoneal hernia repair Mesh implants can also be a source of trouble. One case described a thin male patient who developed persistent right groin pain three months after hernia repair with a mesh plug; laparoscopic exploration revealed the mesh plug had folded excessively, creating a hard lump, sometimes called a meshoma, that compressed nearby nerve structures.10British Journal of Surgery. PAIN PLUG EXPLANT USING TAPP TECHNIQUE
Testicular Torsion and Other Urological Emergencies
Testicular torsion is one of the diagnoses you absolutely do not want to miss. It happens when the spermatic cord twists, cutting off blood flow to the testicle. The classic presentation is sudden, severe scrotal pain, but the pain frequently radiates up into the groin on the affected side, and some men initially feel it primarily as groin pain rather than scrotal pain. This is a time-sensitive emergency: the testicle can be saved in most cases if surgery happens within about six hours, but the odds drop steeply after that. Color-Doppler ultrasound of the spermatic cord is the go-to imaging test and has been shown to detect reduced or absent blood flow in the vast majority of confirmed cases.11Urologia Journal. Color-Doppler sonography sensitivity of the spermatic cord in the diagnosis of acute testicular torsion
Kidney stones can also cause right groin pain. When a stone lodges in the lower portion of the right ureter, the pain often radiates from the flank down into the groin and sometimes into the testicle. This type of pain tends to come in waves and is frequently accompanied by nausea, blood in the urine, or an urgent need to urinate. If the pain started in your back or side and migrated downward, a stone is high on the list.
Epididymitis, an infection or inflammation of the coiled tube behind the testicle, is another common urological cause of groin discomfort. In younger men it’s often related to sexually transmitted infections, while in older men it’s more commonly caused by urinary tract bacteria. The pain builds gradually over hours to days and is usually accompanied by swelling and warmth on the affected side.
When the Appendix Sends Pain to the Groin
This one surprises people. The appendix sits on the right side of the lower abdomen, and in unusual presentations, appendicitis can produce pain or complications that manifest as a groin problem rather than the textbook lower-right-abdominal pain. A case report described a 27-year-old man who came to the hospital not with abdominal symptoms but with a progressive painful swelling of his right lower abdomen and groin. Imaging revealed an abscess at the right inguinal area that communicated with the intra-abdominal region. Surgery found that the abscess had tracked down from a subserous acute appendicitis, draining about 250 mL of pus from the subcutaneous tissue and preperitoneal space.12PubMed Central. Acute appendicitis presenting with abdominal wall and right groin abscess: a case report
This is a rare scenario, but it’s worth knowing about because right-sided groin pain with swelling, fever, or redness that doesn’t look like a typical hernia should raise a red flag for something deeper going on. A retrocecal appendix, one that sits behind the cecum rather than dangling below it, is especially likely to produce atypical pain patterns.
Psoas Abscess and Deep Retroperitoneal Causes
The iliopsoas muscle is a thick, powerful hip flexor that runs from the lumbar spine down through the pelvis to attach at the top of the femur. When this muscle develops an abscess, the resulting pain can show up in the hip, the lower back, or the groin, making it easy to mistake for something else entirely. A psoas abscess can mimic septic hip arthritis, iliopsoas bursitis, or even appendicitis.13PubMed Central. A Pain in the Psoas Patients often hold the hip flexed because straightening the leg stretches the inflamed muscle and makes the pain worse. Fever and general malaise are common clues, but not always present. A psoas abscess can develop from a spinal infection, Crohn’s disease, or sometimes with no identifiable source at all.
Other masses in the retroperitoneal space, the area behind the abdominal cavity, can also press on structures that refer pain to the groin. A 70-year-old man was admitted with stinging pain in his right groin radiating toward the inner thigh. A CT scan initially suggested an obturator hernia or a nerve tumor, but MRI ultimately revealed a ganglion cyst in the obturator foramen.14PubMed Central. A stepwise approach to ‘groin pain’: a common symptom, an uncommon cause Cases like this are rare, but they show why persistent groin pain that doesn’t fit a clear pattern sometimes needs advanced imaging to sort out.
Right-Sided Varicocele as a Warning Sign
A varicocele is an enlargement of the veins within the scrotum, similar to a varicose vein in the leg. Most varicoceles form on the left side due to the anatomy of the venous drainage. When one appears on the right side in isolation, it catches the attention of urologists because it can indicate something is compressing the right-sided venous return. In some cases, this means a retroperitoneal mass, including kidney tumors, may be obstructing the inferior vena cava or the right gonadal vein.15PubMed Central. Retroperitoneal paraganglioma presenting as right-sided varicocele: case report
That said, not every isolated right-sided varicocele is sinister. A study of patients with right varicoceles found that nonmalignant causes were more common overall, but those cases that were linked to malignancy tended to present with additional signs of metastatic disease.16PubMed. Isolated Right-Sided Varicocele: Is Further Workup Necessary? Another case report reinforced the point that right-sided varicocele should prompt investigation for a right kidney tumor.17PubMed. Does right-sided varicocele indicate a right-sided kidney tumor? The upshot: a right varicocele alone doesn’t mean cancer, but it does warrant imaging of the abdomen and retroperitoneum to rule out an underlying mass.
Swollen Lymph Nodes and Infections
The inguinal lymph nodes sit along the groin crease and serve as a drainage hub for the lower limbs, external genitalia, lower abdominal wall, perineum, and anal area. When these nodes swell, they can produce a tender lump in the groin that may be mistaken for a hernia. Possible causes of inguinal lymph node enlargement include infections like herpes simplex, syphilis, and skin infections of the lower extremity, as well as more serious conditions like lymphoma or penile carcinoma.18PubMed Central. POCUS Diagnosis of Bacterial Lymphadenitis Later Determined to be Cat Scratch Disease: A Unique Presentation and Review A swollen groin node that is hard, fixed in place, or growing steadily over weeks deserves medical evaluation, even if it isn’t particularly painful.
Chronic Pelvic Pain Syndrome
Sometimes right-sided groin pain persists for months without any identifiable hernia, muscle tear, or stone, and imaging comes back normal. In these situations, chronic primary pelvic pain syndrome is one explanation. This condition involves pain in the urogenital region that can be accompanied by urinary symptoms, sexual dysfunction, and emotional distress. The underlying process appears to involve a complex mix of inflammatory, neurological, musculoskeletal, and psychosomatic factors, and a comprehensive workup is recommended to rule out the many other diagnoses that can cause similar symptoms.19PubMed Central. Chronic Primary Pelvic Pain Syndrome in Men
Chronic pelvic pain syndrome is frustrating for patients and clinicians alike because there’s no single test that confirms it. The diagnosis is essentially one of exclusion: you arrive at it after ruling out everything else on the list. Treatment tends to be multimodal, combining physical therapy, medications for nerve-related pain, and sometimes psychological support for the anxiety and depression that often accompany chronic pain conditions.
When to Get Evaluated Urgently
Most causes of right-sided groin pain are not emergencies, but a few demand prompt attention. Testicular torsion, as discussed above, needs surgery within hours. A strangulated inguinal hernia, where the trapped tissue loses its blood supply, can become life-threatening if not repaired quickly. Appendicitis that has progressed to abscess formation also qualifies as urgent. Signs that should push you toward an emergency room rather than a wait-and-see approach include:
- Sudden, severe pain: especially if it began abruptly in the scrotum or groin and is getting rapidly worse.
- Fever with groin swelling: suggests infection such as an abscess, infected lymph node, or complicated appendicitis.
- A groin bulge that can’t be pushed back: a possible incarcerated or strangulated hernia.
- Nausea, vomiting, and inability to pass gas: may indicate bowel obstruction from a hernia.
- Redness or warmth over the swelling: points to an inflammatory or infectious process that may need drainage.
Groin pain that is mild, chronic, and worsened by activity is far less likely to be dangerous, but it still benefits from diagnosis. Living with pain you’ve gotten used to doesn’t mean the underlying cause has gone away, and some conditions like labral tears or adductor tendinopathy respond much better to treatment when addressed earlier rather than later.
Why Right-Sided Groin Pain Has So Many Possible Causes
The sheer diversity of this list can seem overwhelming, and there’s a simple anatomical reason for it. The right groin sits at a junction where structures from the abdomen, pelvis, hip, and lower limb all overlap. The inguinal canal carries the spermatic cord. The femoral canal carries the femoral artery and vein. The obturator foramen, a large opening in the pelvic bone just behind the groin, transmits its own set of nerves and vessels. The hip joint is immediately deep to all of this. And the appendix, uniquely a right-sided organ, drapes over the area from above. Any of these structures can generate pain that the brain interprets as “groin,” which is why the same symptom can mean a pulled muscle in a weekend soccer player and an obturator hernia in an elderly patient.
For men experiencing new or worsening right groin pain, the most useful thing you can do is pay attention to the circumstances: Did it come on suddenly or gradually? Is it related to activity? Is there a visible lump? Does it radiate to the testicle, the thigh, or the back? Is there fever? These details narrow the list dramatically and help your doctor decide whether you need an ultrasound, a CT scan, an MRI, or simply a careful physical exam.