painful knees on the inside of my knee caps where the bone is its tender , they burn sometims , after sitting and getting up they feel stiff and very painful , same with sometimes at night and in the morning after getting up out of bed . when i walk around for more than 20 mins in a store they start to be very painful and it hurts to walk . i also noticed sometimes when i get really cold my knees ,wrist and sometimes my elbow ache . but its mostly my wrists and knees . i do beleive my mother may have rheumatoid arthritis ,(bone and joint disease) dunno if both are connected meaning if the same . anyways i was wondering if anyone else has these symptoms and if so what causes it. what causes a person to lose height? in the last 10 yr ive lost 1/2 inch in my height i was with shoes 5 f3 w/o 5 2 1/2 now im about 5f2 w/o shoes also been feeling pain and tenderness in my upper left abdominal regein feels like a bulge . is this all signs of possable RA ?