How to Spot a TMJ Problem: 5 Common Signs You Need to Know

The temporomandibular joints (TMJ) connect your lower jaw to your skull and work with the surrounding muscles to make chewing, speaking, yawning, and other movements possible. Problems involving this system are known as temporomandibular disorders (TMD). While jaw pain is a familiar warning sign, symptoms can also appear in the face, head, neck, or shoulders, sometimes making the condition difficult to recognize.

Five common signs of a TMJ problem include persistent face, neck, or shoulder pain; limited mouth opening; painful clicking or locking; a noticeable change in how the upper and lower teeth fit together; and unexplained headaches, earaches, toothaches, dizziness, hearing changes, or difficulty swallowing. An occasional painless click or pop does not necessarily indicate a problem, but discomfort, restricted motion, locking, or changes in your normal bite deserve closer attention.

One simple way to observe mobility is to see whether approximately three vertically stacked fingers can comfortably fit between the upper and lower teeth when your mouth is fully open. This is only a general reference because normal range varies between individuals. More important signs include pain with opening, significant restriction, or consistent deviation of the jaw to one side.

Some symptoms occur because of referred pain, where discomfort is experienced away from the structure causing it. This may explain why someone experiences an earache or toothache even when an examination finds no problem with the ear or tooth. Since the jaw also works closely with muscles and joints in the neck, looking beyond the painful area can be important when symptoms persist.