A condition called fibro muscular dysplaysia. I am rapidly gaining weight and at the end of the day have very swollen feet and ankles. I am only 49 and am pretty active. I have put on21 pounds just since September and my diet has not changed. If anything I consume less calories and have been running again several times a day. Is weight gain and fluid retention something I should be concerned with? I also have had a numbing sensation in my fingers and they go white with little to no feeling in them and sometimes take up to an hour before feeling returns.