Diastasis recti is a separation of the two long muscles that run down the front of the abdomen. It is common during pregnancy and after birth, as the growing uterus stretches the tissue between the muscles.
The rectus abdominis muscles are joined in the middle by a band of connective tissue. During pregnancy, the growing baby and hormonal changes stretch this tissue, so the muscles move apart. The gap often gets smaller in the weeks after birth, but in some people it stays wider for longer. Being pregnant more than once or carrying twins can make a separation more likely.
A soft bulge or ridge down the middle of the belly is the most common sign, especially when sitting up or straining. Some people also notice lower back pain, a weak core or a tummy that still looks pregnant months after birth. The condition is usually not painful in itself.
A GP, midwife or physiotherapist can check the size of the gap with their fingers. Gentle core exercises guided by a physiotherapist are the usual first step. Surgery is considered only in a small number of cases.
Physical jobs can feel harder while the core is weak. Heavy lifting, long periods of standing or bending may need a temporary adjustment. A short conversation with a manager about duties and breaks can make the return easier.
Sources: NHS, MedlinePlus.