Rectus Diastasis: Separation of rectus abdominus muscles which occasionally occurs in older patients and or those with weakening of the abdominal musculature. The midline hernia can be made more apparent by any maneuver that increases intra-abdominal pressure as demonstrated above. Charlie Goldberg, M.D. - UCSD Catalog of Clinical Images #Clinical #Photo #Rectus #Diastasis #Ventral #Hernia #Midline #Valsalva #UCSDH