For months or years, doctors might look at your chart and tell you, "It's just muscle tension. Try to relax." Yet your body knows that relaxing feels dangerous.

Tight and unstable are not always separate stories. In connective tissue disorders, they can become deeply tangled together.

Muscles may tighten because they are trying to guard an area that does not feel stable. The question becomes whether the muscles are the primary problem or whether they are trying to hold something underneath together.

What looked like ordinary muscle tension for years was eventually identified as craniocervical instability. The muscles were compensating for a cervical spine that ultimately required occipital fusion at Weill Cornell to stabilize. CCI sits at the severe end of the connective tissue picture in EDS, which is why symptoms that initially look muscular can sometimes reflect something much deeper structurally.

A hypermobility-aware physical therapy evaluation can help sort through the pattern, but upper cervical instability is often evaluated differently from ordinary neck tension. Rehabilitation approaches that help one condition may aggravate the other.

If this pattern feels familiar, the 2023 international expert consensus on upper cervical instability in joint hypermobility (link) outlines the presentation patterns and rehabilitation cautions specialists use when evaluating instability in hypermobility disorders.