What does a high white cell count, high red cell count mean?

A few things: If your white cell count is elevated by itself, it typically means that you have some sort of infection. However, if both your red cells and white cells are elevated at the same time, it probably just means that you are dehydrated. There are a other common conditions include stress polycythemi, a and more rarely, polycythemia rubra vera, these causes are all easy to excluded!

Could be many things: High white cell and high red blood cells counts can be caused by many things--from being dehydrated that make the blood more concentrated and elevates everything, vs infection, inflammation, reaction to some thing else-lung problems/ sleep apnea etc -vs problems with bone marrow. You should see your md. She/he can do some initial blood work etc. If needed your md can refer you to see specialist.