When I stand up after sittting for a period of time my legs are stiff and achy in the joints but recently my hip has really been bothering me. It hurts until it feels like it has cracked then it's better until I sit, then stand up again. I've noticed this for a long time and recently my roomate has pointed out that my joints crack and pop every time I stand up, loud enough that others hear it. I've been very active lately and when I move for an extended period the pain goes away. But on the contrary when I am less active my leg joints are very stiff and achy, more so in the colder seasons. My mom seems to have the same problem but refuses to see a doctor. She is also very active. Her parents have had hip and knee replacements. My mom and I both have symptoms of restless leg syndrome, especially the urge to move. I move my legs constantly when I'm sitting in my desk chair.
Is RA hereditary? Could this be just another symptom of restless leg syndrome? Are they related? And why would the pain stop during activity. Could running and other strenuous excercise worsen a possible injury even though I have no pain during that activity?