Lower Right Abdominal Pain – Key Causes & Gender Differences

Pain in the lower right abdomen is one of the most common reasons people visit emergency departments, but the cause is not always clear. Appendicitis is the most frequent serious cause, yet many cases stem from digestive issues, reproductive conditions, or musculoskeletal problems. Understanding which symptoms require urgent care and which can be managed at home depends on knowing the key differences between possible causes.

The experience of pain varies widely: some people describe a sharp, stabbing sensation that comes and goes, while others feel a constant dull ache. Gender plays a major role because the reproductive organs are located in the lower abdomen. In females, conditions involving the ovaries, fallopian tubes, and uterus are common. In males, hernias and urinary tract problems are more frequent. The following sections break down the most likely causes by gender and pain pattern, with clear guidance on when to seek medical help.

Medical sources emphasize that lower right abdominal pain should never be ignored, especially when accompanied by fever, vomiting, or an inability to pass gas. However, not all pain in that area is an emergency. This article draws on evidence from leading health authorities to help you distinguish between benign discomfort and a situation that requires immediate attention.

What Causes Lower Right Abdominal Pain in Females?

• Lower right abdominal pain is not always appendicitis, even if the appendix is present.
• Gender plays a major role: reproductive conditions are common causes in females.
• Pain that “comes and goes” is often gas, IBS, or a kidney stone, but can still be serious.
• Radiating pain to the leg or hip suggests a referral pattern from the ureter, spine, or psoas muscle.
• Appendicitis pain typically starts near the navel before shifting to the lower right over 12–24 hours.
• Hernias are more common in males and may worsen with lifting or coughing.

In females of reproductive age, gynecological causes are as common as appendicitis. Ovarian cysts, for example, are fluid-filled sacs that can cause sharp or dull pain that worsens during exercise or sexual activity. According to the American College of Obstetricians and Gynecologists, most cysts are harmless, but larger ones can rupture and lead to severe pain and bleeding. Ectopic pregnancy — implantation of a fertilized egg outside the uterus — is a medical emergency that typically presents with severe right-sided abdominal pain and requires immediate surgery if the fallopian tube ruptures.

Endometriosis, pelvic inflammatory disease, and ovulation pain are other frequent causes. The Cleveland Clinic notes that Fitz-Hugh-Curtis syndrome, a complication of pelvic inflammatory disease, can also cause right upper quadrant pain that may be referred downward. For women who are pregnant, lower right abdominal pain may signal round ligament strain or, less commonly, ovarian torsion or appendicitis.

What Causes Lower Right Abdominal Pain in Males?

Can a hernia cause lower right abdominal pain in men?

Inguinal hernias are significantly more common in males. They occur when fatty tissue or part of the bowel pushes through a weak spot in the lower abdominal wall, often creating a visible lump near the groin. Pain may be a dull ache that worsens with coughing, bending, or lifting. If the hernia becomes trapped (incarcerated), blood supply can be cut off, requiring emergency surgery. The NHS advises that any new lump accompanied by pain should be evaluated by a doctor.

Is testicular torsion related to lower right abdominal pain?

Testicular torsion — twisting of the spermatic cord — causes severe pain in the testicle that often radiates to the lower abdomen. It is a surgical emergency because the testicle can be lost if blood flow is not restored within hours. The pain is sudden and intense, sometimes accompanied by nausea and vomiting. This condition requires immediate medical attention.

What are the other common causes in men?

Digestive issues such as constipation, gas, and irritable bowel syndrome can produce lower right pain in men. Urinary tract infections, kidney stones, and prostatitis are also possibilities. The CDC describes kidney stones as hard deposits that cause severe colicky pain that can radiate to the groin and leg. Epididymitis, inflammation of the sperm-carrying tube, can cause a dull ache in the lower abdomen and scrotum.

Is It Always Appendicitis? Common Causes vs. Emergency Signs

What does appendix pain feel like compared to gas pain?

Appendicitis typically begins as a vague discomfort around the navel and within 12–24 hours shifts to the lower right abdomen. The pain becomes constant, sharp, and worsens with movement, coughing, or deep breathing. Gas pain, in contrast, is often crampy, comes and goes, and may be relieved by passing gas or having a bowel movement. Fever, nausea, and loss of appetite point strongly toward appendicitis.

Can lower right abdominal pain be caused by constipation?

Yes. Constipation is one of the most common benign causes of lower right abdominal pain. The discomfort is usually dull and crampy, often accompanied by bloating and a feeling of incomplete evacuation. It resolves after a bowel movement or with dietary changes. The Mayo Clinic notes that constipation does not cause the progressive worsening and systemic signs seen with appendicitis.

What causes sharp pain in the lower right abdomen that comes and goes?

Intermittent sharp pain may be due to kidney stones, ovulation (in women), muscle spasms, or early appendicitis. Kidney stones produce waves of intense pain that can radiate to the groin. Ovarian cysts may cause sharp pain that suddenly resolves if the cyst ruptures. However, “coming and going” does not rule out appendicitis — early inflammation can be fleeting before becoming constant.

What should I do if I have lower right abdominal pain but no appendix?

People who have had an appendectomy can still experience lower right abdominal pain. The list of possible causes in someone without an appendix includes bowel-related problems (constipation, Crohn’s disease, diverticulitis), urinary issues (kidney stones, infection), hernias, and in women, gynecological conditions. The absence of the appendix shifts the diagnostic focus away from appendicitis but does not rule out other emergencies.

What Causes Lower Right Abdominal Pain Radiating to the Leg or Hip?

Can a kidney stone cause pain radiating to the leg?

Yes. Kidney stones often cause severe pain that starts in the flank and radiates down toward the groin and inner thigh. This is because the stone irritates the ureter, which shares nerve pathways with the leg. The pain typically comes in waves and may be accompanied by blood in the urine, frequent urination, and nausea.

Is lower right abdominal pain near the hip bone a muscle strain?

The psoas muscle, which runs from the lower back to the upper thigh, can become strained or irritated, causing pain in the lower right abdomen that travels to the hip. This is often felt when walking or lifting the leg. Hernias near the inguinal ligament can also produce pain that radiates to the upper thigh.

Can sciatica cause lower right abdominal pain?

Sciatica typically affects the lower back, buttock, and leg, but it rarely causes true abdominal pain. However, referred pain from the lumbar spine can sometimes be felt in the lower abdomen. Ubie Health notes in a clinical review that radiating pain to the leg does not have a single definitive cause and often requires imaging to identify the source.

When Should I Go to the ER for Lower Right Abdominal Pain? A Symptom Timeline

The timing and progression of pain offer important clues about the underlying cause. The following timeline shows typical patterns and suggests when emergency care is needed.

1. 0–4 hours: Mild, crampy pain that comes and goes may be gas or constipation. Try rest, hydration, and a gentle walk. If pain worsens, continue monitoring.
2. 4–12 hours: If pain becomes constant, moves to the lower right, and is accompanied by low-grade fever or loss of appetite, appendicitis is possible. Seek medical evaluation.
3. 12–24 hours: Sharp, worsening pain that does not subside, especially with nausea or vomiting, is a strong indicator of appendicitis or kidney stones. Go to the ER.
4. 24–48 hours: Pain that waxes and wanes but remains severe suggests kidney stones or ovarian cyst issues. Urgent care is appropriate if pain is not controlled.
5. Days to weeks: Chronic, dull pain that fluctuates with bowel movements points to IBS or other functional disorders. Schedule a non-urgent doctor’s appointment.

The NHS self-help guide recommends seeking emergency care if the pain is sudden and severe, if you cannot keep fluids down, or if there is blood in your stool.

Can Lower Right Abdominal Pain Be Caused by Gas or Constipation? What We Know and What We Don’t

Why Does My Lower Right Abdomen Hurt When I Walk?

Pain that is triggered or worsened by walking often involves the muscles or connective tissues of the abdominal wall. A common cause is a “side stitch” – a cramp in the diaphragm or intercostal muscles that occurs during exercise. Muscle strain in the lower abdomen or psoas muscle can also cause pain that intensifies with movement.

Hernias may become more noticeable when walking because increased intra-abdominal pressure pushes tissue through the defect. In women, ovarian cysts or endometriosis can cause sharp pain during physical activity. If the pain is accompanied by limping or an inability to straighten the leg, a psoas abscess or hip joint problem should be considered.

What Do Medical Authorities Say About Lower Right Abdominal Pain?

“Lower right pain usually has something to do with your appendix. So, seek medical care right away if you have severe pain in that area.”

— Cleveland Clinic, Right Side Abdominal Pain overview

“Sudden pain in the lower right-hand side is likely appendicitis.”

— NHS, Stomach Ache guide

“Other common causes include gas, constipation, gastroenteritis, and ovarian conditions.”

— Ubie Health, Clinical note on abdominal pain

These quotes highlight the range of possible diagnoses. While appendicitis is the first concern for sudden, severe pain, many episodes turn out to be caused by minor digestive or reproductive issues. The key is to recognize red flags that require immediate medical assessment.

What Are the Next Steps for Lower Right Abdominal Pain?

If your pain is severe, constant, and accompanied by fever, vomiting, or inability to pass gas, go to the emergency room. If the pain is mild and intermittent, monitor it for 24 hours while staying hydrated and avoiding heavy meals. For radiating pain to the leg, consider a urology or orthopedics referral. Female patients should include an OB/GYN evaluation. For more on natural approaches to managing inflammation, see What Is Turmeric Good For? Benefits, Risks, and Evidence. And if you are monitoring symptoms in a child, you may find Hand Foot and Mouth Disease Symptoms – Stages, Treatment, Recovery helpful for distinguishing common childhood illnesses.

Frequently Asked Questions About Lower Right Abdominal Pain