<unk> , or<unk> s abdominis<unk> , is defined as a gap of about 2.7 cm or greater between the two sides of the<unk> s abdominis muscle. The distance between the right and left<unk> s abdominis muscles is created by the stretching of the linea alba, a connective collagen sheath created by the aponeurosis insertions of the transverse abdominis, internal oblique, and external oblique. This condition has no associated morbidity or mortality.<unk>  of the<unk> s abdominis muscle most frequently occurs in newborns and pregnant women; however, it may occur in any adult woman or man. In the newborn, the<unk> s abdominis is not fully developed and may not be sealed together at midline.<unk>  is more common in premature newborns. In pregnant or postpartum women, the condition is caused by the stretching of the<unk> s abdominis by the growing uterus. It is more common in multiparous women (women who have had multiple pregnancies) owing to repeated episodes of stretching. When the defect occurs during pregnancy, the uterus can sometimes be seen bulging through the abdominal wall beneath the skin. Non-pregnant women are more susceptible to develop<unk>  when over the age of 35 or with high birth weight of child, multiple birth pregnancy, or multiple pregnancies. Additional causes can be attributed to excessive abdominal exercises after the first trimester of pregnancy. Strength training of all the core muscles, including the abdominis<unk>  muscle, may or may not reduce the size of the gap in pregnant or postpartum women. Crunches may increase the<unk>  separation. All corrective exercises should be in the form of pulling in the abdominal muscles rather than pushing them outwards. In extreme cases,<unk>  is corrected with a cosmetic surgery procedure known as an abdominoplasty by creating a plication or folding of the linea alba and suturing together, which results in a tighter abdominal wall.
Diastasis recti
Osteoma cutis
Cold abscess
Granuloma inguinale
Protrusio acetabuli
Traumatic calcinosis cutis
Myxoid cyst
Myositis ossificans