Jane,
Did your Dr order the industrial type? I use a 70% dsmo cream. I ordered on line and it doesn't do that to me. DSMO is not authorized to be sold in the US except as a slovent, so I wonder why your Dr would order it for you. Go to Amazon.com and order the DSMO cream or gel. I use the rose scented to mask the solvent smell. I have been told specifically not to use the industrial grade, it has many impurities that can be absorbed through your skin.
http://www.amazon.com/s/ref=nb_sb_no...ose+&x=17&y=21