I worked in medicine 30 years...I have great doctors, but they all missed dehydration. I brain was slow...weak and cramps in legs..arms..and toes. Hammer toe...the drs. Said it was parkinson's and pushed more pills .even both they said. BS I say. A smart friend said eat Morton s lite salt. Cramp went away.brain working better. Sinise cab dehydrate and cause heat stroke. Intent heat is bad for parkinson's. ..Carbo do a levsdopa dry u out too .so electrolyte r not ever in balance. Drink Gadoade or pedilyte or Morton lye salt . Keep that blood pressure normal and monitor. See if u feel better. Helped me alot.