覺得應該看看醫生

嶽母走路時一側胳膊不太擺動。我見到她時就如此，沒有重視。她有糖尿病，去年由於心血管疾病（給大腦供血的動脈 90%阻塞）去世。我個人覺得她的一側胳膊不太運動可能與此有關。僅僅猜測，供參考

Stroke Warning Signs （from WebMD)

Sometimes symptoms of stroke develop gradually. But if you are having a stroke, you are more likely to have one or more sudden warning signs like these:

Numbness or weakness in your face, arm, or leg, especially on one side
Confusion or trouble understanding other people
Trouble speaking
Trouble seeing with one or both eyes
Trouble walking or staying balanced or coordinated
Dizziness
Severe headache that comes on for no known reason