 [ Symptoms ] what is the best way to remove warts [ Disease ] i am not a doctor & i have never used crack but i have used meth so i am just giving you my opinion from what your saying you might be having symptoms of a stroke or heart attack & the lower back could be your kidneys so i would see a doctor asap also idk how crack is made but if it is cut you may be allergic to whatever it is cut with just trying to help