The perpetuating factors checklist: why trigger points come back

Sustained low-level contraction is the most common driver: a monitor slightly too low, a bag always on the same shoulder, a car seat that rotates you, a job that holds one arm out unsupported, sleeping with the shoulder jammed under the head.

Look for whatever keeps the involved muscle mildly switched on for hours, and change that first — it is worth more than an extra session.

For the terminology and interpretation used here, compare What are trigger points?; Primary vs secondary trigger points; How to read referred pain maps. These guides distinguish the definition of a trigger point, its classification and the limits of a referred-pain map.

The classic list includes iron, vitamin B12, folate and vitamin D status, thyroid function, poorly controlled blood glucose, chronic sleep restriction, and medication effects such as statin-associated muscle symptoms.

These are not reasons to self-supplement. They are reasons to raise widespread, treatment-resistant muscle pain with a physician instead of adding a fourth manual technique.

Jaw clenching, breath holding, shoulder hitching during concentration, and long stretches of stillness under stress all keep specific muscles loaded. Brief, frequent interruptions beat one long break.

A practical target is a change of position every 30 to 45 minutes, plus two or three range-of-motion resets per day for the region you are treating.