If your surgical wound becomes infected, the area is more likely to become weak. You may also get a hernia next to a stoma. A stoma is an opening in your abdomen that drains stool from your bowels. Muscle strain: Heavy lifting and pregnancy can strain the muscles in your abdomen.
WHAT THEY DO... Active trigger points cause muscle pain. Latent trigger point can cause stiffness in a muscle. Triggers are created by a protective mechanism in your body - a message that tells a muscle to tighten up to prevent further damage.
A trigger point is simply a small contraction knot in muscle. This knot feels like a pea buried deep in the muscle, and can feel as big as a thumb. It maintains a hard contraction on the muscle fibres connected to it, thus causing a tight band that can also be felt in the muscle.