Short Answer
They can appear within the same tension pattern because jaw, neck, and shoulder muscles often influence each other.
How to think about it
Clenching and jaw-area tension may stiffen the neck and shoulders. Neck and shoulder tension can also increase jaw-area load, so ear fullness, jaw stiffness, and neck or shoulder pain may overlap.
Evidence and limits for this question
What this question checks
This page uses the question "My ear feels full and my neck or shoulder is stiff. Could they share a pattern?" to organize a symptom pattern before assuming a TMJ-related cause.
What to rule out first
Urgent, organ-specific, dental, ENT, neurologic, traumatic, infectious, or breathing-related warning signs should be considered before jaw-related interpretation.
What is reviewed in clinic
Consultation details, symptom timing, jaw movement, chewing muscle tension, bite changes, previous exam results, and recurrence patterns may be reviewed together.
What not to decide from this page
Do not use this page alone to choose a diagnosis, appliance, procedure, medication, or emergency response.
Safety note
Arm numbness, severe headache, neurologic symptoms, or rapidly worsening neck pain should be evaluated medically first.