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Atlas · Abdomen

External Obliques

Lateral trunk aching along the oblique muscle fibers worsened by rotation movements

External Obliques
Body region
Abdomen
Trigger points
3
documented in this muscle
Common symptoms
14
patterns cataloged
Common causes
17
contributory factors

Illustrated overview

External Obliques · Anatomy 1

Anatomical view of the illustrated muscle.

Open full-size image

Trigger points

1. TrP1

Location. Sides of abdomen

Trigger point map
External Obliques — External Oblique · Common trigger-point sitesOpen full-size image

Regional muscle reference; this is not an individual map of the selected numbered trigger point.

Referred pain map
External Obliques — External Obliques · Regional source exampleOpen full-size image

One attachment-region example

Regional muscle reference; this is not an individual map of the selected numbered trigger point.

Pain referral. Side of abdomen, groin, testicles

Pain Pattern

  • Side of abdomen
  • Groin
  • Testicles/labia
  • Upper hip
  • Rib area

What This Pain Feels Like

Pain along the side of the abdomen may extend toward the groin and become more noticeable with twisting, coughing or turning in bed. These features can occur with abdominal-wall pain, but do not by themselves establish a muscular cause or exclude a hernia or organ condition.

What Patients Report

  • Pain in side of stomach
  • Groin pain
  • Testicle pain (in males)
  • Pain when twisting
  • Pain when coughing

What Makes It Worse

  • Twisting
  • Coughing
  • Side bending
  • Sports
  • Laughing
  • Rolling over in bed
Browse related exercises (1)

Symptoms patients report

Side abdominal pain Lateral trunk aching along the oblique muscle fibers worsened by rotation movements

Groin pain Referred inguinal discomfort from lower oblique trigger points mimicking hernia symptoms

Testicular pain Genital pain may coexist with abdominal-wall tenderness, but requires assessment of local and referred causes; tenderness does not exclude genital disease.

Hip pain Referred discomfort at the iliac crest from oblique muscle attachment trigger points

Pain when twisting Sharp lateral trunk pain during rotational movements from oblique taut band activation

Testicular or labial aching Genital pain may coexist with abdominal-wall tenderness, but requires assessment of local and referred causes; tenderness does not exclude genital disease.

Lower abdominal discomfort Taut bands in the lower lateral abdominal wall create diffuse lower abdominal discomfort

Pain mimicking hernia Inguinal region referral from external oblique trigger points closely mimics inguinal hernia symptoms

Pseudo-visceral pelvic pain Somatic trigger point referral to the pelvic region mimics visceral pathology via convergent neurons

Epigastric pain mimicking heartburn Upper external oblique trigger points refer medially to the epigastric region mimicking gastric reflux

Upper abdominal ache Taut bands near the costal margin create diffuse upper abdominal wall aching

Substernal burning Referral to the substernal area mimics esophageal burning from gastroesophageal reflux disease

Nausea Nausea with abdominal pain has several possible causes; it should not be explained solely by an abdominal trigger point.

Pain after meals (positional) Post-meal abdominal distension increases pressure on upper oblique trigger points exacerbating referral

Common causes

Twisting movements Forceful trunk rotation overloads external oblique fibers especially during sports activities

Coughing Repeated forceful expiratory effort strains oblique muscles during prolonged coughing episodes

Sports (golf, tennis) Rotational sports demand repeated forceful trunk twisting overloading oblique muscle fibers

Sit-ups with rotation Resisted trunk rotation during core exercises places excessive load on oblique fibers

Carrying children Asymmetric loading while carrying a child overloads obliques on the supporting side

Heavy lifting Increased intra-abdominal pressure during heavy lifting strains lower external oblique fibers

Chronic coughing Repeated forceful coughing generates sustained oblique contraction stressing inguinal region fibers

Sit-ups and crunches (excessive) High-volume abdominal exercises overload the external obliques especially near the inguinal region

Straining during bowel movements Valsalva maneuver during straining generates high lower abdominal wall tension and trigger points

Running (especially sprinting) Trunk rotation during sprinting creates high-velocity eccentric loading on the lower external obliques

Post-surgical abdominal adhesions Surgical scarring restricts abdominal wall mobility creating compensatory trigger points in adjacent tissue

Prolonged slouching posture Thoracic kyphosis compresses the upper abdominal wall increasing costal margin oblique trigger points

Excessive oblique exercises High-volume rotational core exercises overload the upper external oblique fibers near the ribs

Chronic cough Repeated forceful coughing generates sustained upper oblique contraction creating ischemic trigger points

Tight belts or waistbands External compression from tight clothing restricts upper abdominal wall mobility provoking trigger points

Thoracolumbar scoliosis Spinal curvature creates asymmetric oblique loading with concave-side shortening and trigger points

Forceful vomiting Violent emesis generates extreme upper abdominal wall contraction traumatically activating trigger points

Treatment & self-care

Immediate Relief

Side-lying stretch over pillow

Lie on your non-painful side with a firm pillow under your waist. Extend your top arm overhead to stretch the affected oblique muscles. Breathe deeply into the stretched side, expanding the ribs. This gently lengthens the external obliques and releases lateral abdominal tension.

Duration
2-3 minutes per side
Frequency
2-3 times per day
Expect
Work toward more comfortable trunk movement; track bending or turning.

Immediate Relief

Gentle trunk rotation

Sit in a chair with your feet flat on the floor. Slowly rotate your trunk to one side, using the chair arm or backrest for gentle support. Hold for 15-20 seconds, then rotate to the other side. Keep the movement slow and controlled — do not force the rotation.

Duration
20 seconds per side, 3-5 repetitions
Frequency
3-4 times per day
Expect
Work toward more comfortable trunk movement; track bending or turning.

Exercises

Seated trunk rotation stretch

Sit on the floor with legs extended. Cross your right foot over your left leg. Place your left elbow on the outside of your right knee and gently twist your trunk to the right. Hold at a comfortable stretch. This deeply stretches the obliques through combined rotation and side-bending.

Duration
30 seconds per side, 3 repetitions
Frequency
2-3 times per day
Expect
Work toward more comfortable trunk movement; track bending or turning.

Exercises

Modified side plank

Lie on your side with knees bent. Prop yourself up on your forearm and lift your hips, creating a straight line from shoulder to knees. Hold for 10-15 seconds, then lower. This gently strengthens the obliques without aggressive twisting motions.

Duration
10-15 seconds, 5 repetitions per side
Frequency
1-2 times per day
Expect
Build trunk strength and coordination for everyday tasks.

Lifestyle Changes

Activity modification for twisting movements

Temporarily reduce the intensity of rotational sports (golf, tennis, baseball) or twisting exercises. When returning to these activities, warm up thoroughly with gentle trunk rotations. Avoid sudden forceful twisting, especially when lifting. Support your ribs with a pillow when coughing.

Duration
During recovery period (2-4 weeks)
Frequency
Ongoing awareness
Expect
Reduce provoked symptoms while maintaining tolerable activity; progress with the response.

Professional Treatment

Professional evaluation for persistent flank pain

Arrange medical assessment for new unexplained abdominal or groin pain, or pain that is worsening or not settling. Once an abdominal-wall or muscular cause has been assessed, a physiatrist or physiotherapist can offer manual therapy, comfortable movement and a graded return to twisting activities.

Duration
Initial evaluation: 30-45 minutes
Frequency
Promptly for unexplained or worsening symptoms; routine follow-up for an assessed muscular problem
Expect
A working diagnosis and an individualized treatment plan, with progress judged by the relevant daily activity.

Caution Seek emergency care for sudden severe abdominal pain, fainting or vomiting blood. Increasing lower-right abdominal pain, fever or a painful groin bulge needs urgent assessment.

Differential diagnosis

  • Hernia
  • Appendicitis
  • Kidney stones
  • Groin strain
  • Testicular issues
  • Inguinal hernia
  • Testicular torsion
  • Ovarian cyst
  • Athletic pubalgia (sports hernia)
  • Iliopsoas bursitis
  • Adductor strain
  • Gastroesophageal reflux disease (GERD)
  • Peptic ulcer disease
  • Gastritis
  • Costochondritis
  • Gallbladder disease
  • Cardiac angina

Associated Trigger Points

Key Takeaways
  1. Lateral trunk aching along the oblique muscle fibers worsened by rotation movements
  2. Referred inguinal discomfort from lower oblique trigger points mimicking hernia symptoms
  3. Genital pain may coexist with abdominal-wall tenderness, but requires assessment of local and referred causes; tenderness does not exclude genital disease.
  4. Referred discomfort at the iliac crest from oblique muscle attachment trigger points
  5. Sharp lateral trunk pain during rotational movements from oblique taut band activation