Diastasis recti is a separation between the left and right sides of the rectus abdominis, the long muscle that runs down the front of your belly. During pregnancy, the growing uterus stretches the connective tissue (linea alba) that holds these two muscle bands together, and the gap can remain after birth. It looks like a ridge or bulge running down the middle of the belly, especially when you tense your abdominal muscles, and it tends to be more noticeable with multiple pregnancies or carrying multiples.
Diastasis recti is common and is not the same as a hernia, though the two can occur together in some cases.
Warning Signs That Need Prompt Medical Attention
Most cases of diastasis recti are not medical emergencies, but contact your healthcare provider promptly if you notice:
- A bulge that is firm, painful, or does not flatten when you relax
- Severe or worsening abdominal pain
- Nausea or vomiting along with abdominal bulging
- A visible bulge that appears suddenly or changes quickly in size
- Any bulge you are unsure about, especially if it feels tender to the touch
These signs could point to a hernia or another condition that needs a clinical exam. A qualified healthcare provider can tell the difference between diastasis recti and a hernia with a physical exam.
How to Do a Simple Self-Check
You can get a general sense of abdominal separation at home, but this is not a substitute for a clinical assessment. Many people check this way:
- Lie on your back with your knees bent and feet flat on the floor.
- Place your fingertips at your belly button, lightly pressing into your abdomen.
- Lift your head and shoulders slightly off the floor, as if starting a small crunch.
- Feel for a gap between the two muscle bands, and notice how many finger-widths seem to fit into the gap.
- Repeat a few inches above and below the belly button, since the gap can vary along the length of the muscle.
A self-check gives you a rough idea, but it cannot diagnose diastasis recti or rule out a hernia. A healthcare provider or physical therapist can confirm the finding and check for related issues, such as pelvic floor symptoms.
What the Evidence Says About Physical Therapy and Exercise
Targeted abdominal exercise has research support as a first-line, non-surgical approach. The American College of Obstetricians and Gynecologists notes that abdominal strengthening exercises, including certain crunch-style movements and a “drawing-in” maneuver that engages the deep abdominal wall, have been shown to reduce the rate of diastasis recti and decrease the distance between the two muscle bands in women who delivered vaginally or by cesarean.
Smaller clinical studies of postpartum women have found that structured core-strengthening programs, sometimes combined with tools like kinesiology taping or biofeedback, can reduce inter-rectus distance and improve related symptoms such as low back pain. Researchers note that overall evidence quality varies, and study sizes are often small, so results should be viewed as promising rather than definitive.
A physical therapist who specializes in postpartum or pelvic health can build a program suited to your body, since generic ab workouts (including traditional sit-ups) are sometimes discouraged early in recovery because they can increase pressure on the midline. Only a qualified provider can tell you which exercises are appropriate for your specific situation and timeline.
When Surgical Repair May Be Considered
For some people, diastasis recti persists well after pregnancy despite conservative treatment, or it is linked to a hernia or significant functional symptoms like ongoing back pain or trunk weakness. In these situations, a surgeon may discuss abdominal wall repair as an option. This is a decision made with a qualified surgeon after a full evaluation, not something to pursue based on appearance alone or without a clinical exam.
This article does not describe specific surgical techniques, risks, or outcomes, since these vary by individual case and should come directly from your surgical team.
Realistic Recovery Timeline
Recovery is individual, and there is no single guaranteed timeline. Some general patterns from clinical sources and postpartum research:
- No treatment is typically needed for the diastasis recti many women have during pregnancy itself; it is often monitored rather than treated.
- The gap frequently narrows on its own in the weeks and months after birth as the abdominal wall heals.
- Research on postpartum women shows that diastasis recti can persist for many months, and in some studies close to a third to nearly half of women still had measurable separation later in the postpartum period.
- Structured exercise programs in studies have run anywhere from a few weeks to several months, with measurable improvement in that window for many participants, though not everyone responds the same way.
Because ranges vary this widely between individuals, your provider or physical therapist is the best source for what to expect in your specific case.
Self-Check vs. Physical Therapy Assessment: What’s the Difference?
An at-home self-check is a starting point, not a diagnosis. Here’s how the two compare:
- Purpose: a self-check gives general awareness of the gap; a physical therapy assessment gives a precise measurement and a full evaluation.
- Method: a self-check uses a fingertip check while lying down; a physical therapy assessment uses manual palpation and, sometimes, ultrasound imaging.
- Ruling out a hernia: a self-check cannot do this; a physical therapy assessment can, as part of a clinical exam.
- Treatment plan: a self-check does not provide one; a physical therapy assessment provides a plan individualized to your body and symptoms.
- Related issues: a self-check does not check for pelvic floor symptoms or back pain; a physical therapy assessment often does, as part of a full postpartum evaluation.
Evidence Limits and Groups Who Need Extra Caution
Research on postpartum diastasis recti includes a mix of small clinical trials and observational studies, and researchers themselves note that definitions of diastasis recti vary between studies, which makes it hard to compare results directly. Evidence on exercise is generally supportive but not uniformly strong, and long-term outcome data is limited.
People who may need extra caution or closer monitoring include those with multiple pregnancies, those carrying multiples, anyone with a suspected hernia, and anyone with a C-section incision that is still healing. If you fall into one of these groups, check with your provider before starting any new exercise routine.
Frequently Asked Questions
Is diastasis recti the same as a hernia?
No. Diastasis recti is a separation of muscle without a hole in the abdominal wall, while a hernia involves tissue pushing through a weak spot or opening. The two can occur near each other, and only a clinical exam can tell them apart.
Can diastasis recti go away without treatment?
It often narrows on its own in the months after birth, but for some people it persists longer. A provider can help you understand what to expect for your situation.
Is it safe to do regular ab exercises like sit-ups if I have diastasis recti?
This depends on your individual case, and general ab exercises are sometimes discouraged early in recovery. Talk with a physical therapist or your provider before starting or changing an exercise routine.
When should I see a doctor about abdominal separation?
See a healthcare provider if you notice a firm or painful bulge, a bulge that does not flatten when relaxed, or any sudden change in the area. A provider can confirm whether it’s diastasis recti and rule out a hernia.
Educational Disclaimer
This article is for general educational purposes only and is not medical advice, a diagnosis, or a treatment recommendation. Diastasis recti can only be properly assessed and treated with guidance from a qualified healthcare provider or physical therapist. Do not start, stop, or change any exercise program or treatment based on this article alone. For more on how we source and review content, see our Editorial Policy, our Medical Disclaimer, and About Reproductive Health Center.