zebras in parks

Nobody seems to know what makes a teenager sleep for days on end, getting deeper and deeper until she is not responsive. Sleep through an ambulance ride. Sleep through getting an IV placed. Sleep through hetting a catheter placed. Sleep through the eight different doctors in the room, poking and prodding.  The first thing asked is always the most obvious- could she have gotten into anything? Were meds dosed correctly? Blood test after blood test rules out all those things. Everything is normal. Carbon monoxide poisoning at home? New carbon monoxide detectors rule out poisoning from invisible gas. The sleep lab gets involved to look for obscure things like sleep disorders. More bloodwork to investigate further. Search for the zebras in central park,right? It has to be a reaction to something based on the timing of when she starts to wake up. Tonight we stopped everything. No food. No meds. IV fluids only. Tomorrow we will start over. One change at a time. Find the reaction. Sounds so simple.