Hello dear, I understand your concerns but the weird sensations you are feeling ,have nothing to do with the clinical presentation of loss of myelin or demyelination.Loss of myelin can be due to several causes including small ischemic changes, primary demyelination like multiple sclerosis and even in a significant percentage of normal individuals.However,its importance is only when patient have symptoms like limb weakness,loss of sensations,incoordination,vision loss to name a few.Since you don t have these symptoms,its probably insignificant in your case.Your weird sensations are probably due to anxiety.You should see a neurologist so that he can examine you to reassure and even then,if symptoms continue psychiatrist may help.I hope its a fair advice.