Before three month, i was very stressed and afraid that i caught hiv from non risky exposure. One day, i felt something rush from inside to my shoulders and start getting very hot and i felt a sunburn sensation on my shoulders. This feeling remains till now and has spread to my arms, fingers, back, neck and my legs. I feel the burning sometimes under the skin and sometimes on the skin. I wake up every day with redness around my neck and red dots. Can this be anxiety?