My 7 month old baby got haematoma of sternocleido mastoid muscle. what is the treatment for that?

Warm compresses: Warm compresses applied to the hematoma for 20-30 minutes 3-4 times daily.

New or old: This is occasionally found in newborns whose delivery included a stretch of that muscle with enough force to trigger the hematoma. Within weeks the kid is sleeping in one position with his/her head leaning to the side of injury.These usually resolve gradually but the kid may need neck stretches to improve head shape and release the muscle.If this has lasted 7 mo, it may require surgical release.