I have a rash all over my body from an allergic reaction to an antibiotic i was taking, can i still lay in a tanning bed?

Take a break!: I would not advise it at this time as your body is in the midst of a battle against the antibiotic. Your immune system is on high alert and the UV lights may cause the rash to increase. Secondly, much as our culture loves tan skin as a sign of good health it's an incredible health hazard - leads to premature skin aging, wrinkles and sometimes cancer. http://www.cdc.gov/cancer/skin/basic_info/indoor_tanning.htm