One of the things I do during a Biomechanics Assessment is work out if a muscle is in spasm or not. Then the idea is to use a muscle release to reduce that spasm. But if a muscle is in spasm for more than 6 weeks, research has shown that up to 40% of it's composition can become fibrotic.
What does this mean?
Well…with a muscle in spasm, the fibres have simply forgotten just how to contract and relax. And as I said, that simply needs a muscle release exercise to help it.
But if the muscle fibres become fibrotic then this means that they become stuck or 'glued' together. As you can imagine this is a lot more difficult to treat. The more fibrotic a muscle becomes the 'tighter' it feels. This is why waiting for the issue to resolve on its own may not be the best option.