Why do I get sharp pain in my lower left side when I run or jog?

Why You Might Feel a Sharp Pain in Lower Left When Running or Jogging

Experiencing a sudden “sharp pain in lower left” side during a run can be unsettling. In most cases, it’s not a sign of a serious problem—but it’s still important to understand what’s going on, how to relieve it, and when to seek medical advice.

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Common Causes

1. Side Stitch (Exercise-Related Transient Abdominal Pain)

   • Often feels like a tight, stabbing pain just below the rib cage.
   • Thought to be caused by diaphragmatic irritation or reduced blood flow when breathing hard.
   • More likely if you:
     • Run soon after eating.
     • Breathe shallowly or unevenly.
     • Are a beginner or increasing intensity too fast.

2. Muscle Strain

   • Overstretching or overusing the abdominal wall or hip flexor muscles.
   • Pain may worsen with movement, coughing, or twisting.
   • Common in runners who:
     • Increase mileage or speed abruptly.
     • Lack a proper warm-up or cool-down.
     • Have weak core muscles.

3. Iliopsoas (Hip Flexor) Tendonitis

   • Inflammation of the tendon that lifts your thigh.
   • Pain often felt deeper in the groin/upper thigh area, but can radiate to lower left belly.
   • Repetitive lifting of the knee (as in sprinting or hill running) can irritate this tendon.

4. Inguinal Hernia

   • Occurs when a bit of intestine pushes through a weak spot in the lower abdominal wall.
   • You might notice:
     • A bulge in the groin region.
     • Pain that worsens with coughing, lifting, or straining.
   • Needs evaluation, as surgery is often required.

5. Diverticulitis

   • Small pouches (diverticula) in the colon can become inflamed.
   • Typically causes a dull ache, tenderness, or cramping in the lower left abdomen.
   • May be accompanied by fever, nausea, or changes in bowel habits.
   • More common after age 40.

6. Kidney Stones or Infection

   • Sharp, colicky pain that can radiate from the back to the lower abdomen.
   • May cause urinary symptoms: burning, blood in urine, or frequent urges.
   • Accompanied by nausea, vomiting, or fever if infection is present.

7. Gynecological Causes (in those assigned female at birth)

   • Ovulation pain (mittelschmerz) can feel like a brief sharp twinge on one side.
   • Ovarian cysts or pelvic inflammatory disease may cause lower left pain, sometimes worsened by activity.

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How to Distinguish a Simple “Side Stitch” from Something More Serious

Side stitches are by far the most common culprit for a “sharp pain in lower left” side when running. Here’s how to tell the difference:

Side Stitch
– Location: Just below ribs, under the lungs.
– Onset: Gradual, usually early in the run.
– Relief: Slows pace, deep breathing, pressing into the area.

More Serious Issue
– Location: Lower abdomen, groin, back.
– Onset: Sudden, severe, or progressively worsening.
– Other Signs: Fever, nausea, vomiting, blood in urine or stool, bulge in groin, changes in bowel/bladder habits.

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Immediate Steps to Relieve Pain

1. Slow Down or Stop
   • Transition to walking until pain eases.
2. Deep, Rhythmic Breathing
   • Inhale deeply into your belly; exhale fully.
3. Stretch and Press
   • Reach arm overhead and lean away from the pain.
   • Gently press or massage the tender spot.
4. Hydrate Wisely
   • Sip water or an electrolyte drink.
   • Avoid gulping large volumes at once.
5. Check Your Form
   • Keep posture tall, shoulders relaxed.
   • Breathe evenly: consider exhaling as your foot strikes the ground.

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Prevention Strategies

• Warm Up and Cool Down
– Five to ten minutes of brisk walking or jogging.
– Dynamic stretches for hips, thighs, and core.

• Gradual Training Progression
– Increase distance or speed by no more than 10% per week.
– Alternate hard runs with easy “recovery” days.

• Strengthen Your Core
– Planks, side planks, bird-dogs, and dead-bugs.
– Aim for 2–3 sessions a week.

• Improve Breathing Technique
– Practice belly breathing away from workouts.
– Sync your breath to your steps (e.g., inhale for three steps, exhale for two).

• Watch Your Pre-Run Meal Timing
– Finish a large meal at least 2–3 hours before running.
– If you need a snack, choose something small, low in fat, and easy to digest about 30–60 minutes beforehand.

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When to Seek Medical Advice

While most cases of a “sharp pain in lower left” side are benign, see a doctor if you experience:

• Severe, sudden pain that doesn’t improve with rest.
• Fever, chills, nausea, or vomiting.
• Blood in urine, stool, or on toilet paper.
• A noticeable bulge in the groin.
• Pain that worsens over days or is present at rest.
• Changes in bowel or bladder habits that accompany pain.

You might also consider doing a free, online symptom check, using the doctor approved Ubie Symptom Checker if you’re unsure what’s going on.

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Talking to Your Doctor

If your pain is intense, persistent, or accompanied by other worrying signs, make an appointment. Be ready to describe:

• Exact location and quality of pain (sharp, dull, crampy).
• Onset (sudden vs. gradual).
• Activities or foods that trigger it.
• Any related symptoms (fever, nausea, bulges, urinary changes).
• Your training routine and recent changes.

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Key Takeaways

• A “sharp pain in lower left” when running is often a side stitch or mild muscle strain.
• Proper warm-up, breathing, hydration, and gradual training can prevent most cases.
• Persistent or severe pain, bulges, urinary or gastrointestinal symptoms warrant medical evaluation.
• Consider doing a free, online symptom check, using the doctor approved Ubie Symptom Checker if you need guidance on whether to see a doctor.

Always remember: for anything that could be life-threatening or serious, you should speak to a doctor as soon as possible.