2 doctors weighed in:

Can tight sternocleidomastoid.muscle make mastoid proces more prominent on one side. Also have ear pressure and numbness on a cheek all same side

2 doctors weighed in
Dr. Edward Workman
Pain Management
1 doctor agrees

In brief: Yes

The sternocleidomastoid (SCM) muscle inserts into the sternoclavicular area and then runs up into an insertion directly into the mastoid process Thus, if the SCM muscle is in spasm or tight, it will pull on the mastoid process likely causing inflammation and swelling.
The masseter muscle in your cheek is also connected to the mastoid process, and, could tighten w/ hyperspasmodic activity in former

In brief: Yes

The sternocleidomastoid (SCM) muscle inserts into the sternoclavicular area and then runs up into an insertion directly into the mastoid process Thus, if the SCM muscle is in spasm or tight, it will pull on the mastoid process likely causing inflammation and swelling.
The masseter muscle in your cheek is also connected to the mastoid process, and, could tighten w/ hyperspasmodic activity in former
Dr. Edward Workman
Dr. Edward Workman
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