if you have access to common house hold herbs and spices,
i would dump the entire contents of rosemary, thyme, basil, or any other spicey-pungent herb into a stock pot, dump about half of olive oil (canola if thats all youve got) heat it up until the oil is discolored, dump it into a hot bath and soak. do this a lot.
if you have access further to more plants, eucalyptus oil dumped in a bath with usually do it mixed with rosemary or lavenendar. careful cause eucalyptus makes your mucus membranes burn but it isnt dangerous to you if diluted properly.
there are also on the self medications but they are bad for your skin and hardly work.