Tight muscles can have various causes, ranging in severity from 'worrying' to 'serious'. Finding the true cause means ruling out or confirming each possibility – in other words, diagnosis.
Diagnosis is usually a complex process due to the sheer number of possible causes and related symptoms. In order to diagnose tight muscles, we could:
Do you experience tight or rigid muscles that are difficult or impossible to relax, lasting for hours or more, often accompanied by aches and pain? Do not include muscle spasms, or muscles that are well-developed through exercise.
Possible responses:→ No / don't know
→ Sometimes a little tight
→ Often a little tight or sometimes very tight
→ Often very tight