I am a 22 year old female. A few weeks ago I went to Spain and had air conditioning on high and in the night I got a very tight pain in my arms. It went over 24 hours however I came back and in my new job I had the same pain from air con but in light arm, it is a tight pain like blood pressure is being taken. I then started getting tingling in feet and legs and all in my body. I am worried it is MS as that's what I've seen online. Also to add my mum and sister both got diagnosed with arthritis very young and as well as that I have an iron deficiency. Please help!