How do I know the anaphylactic shock is coming on?
For me it is itchy palms, then my face, neck, ears, scalp and the rest of me begins to itch like crazy!  My stomach hurts, nausea begins, then sometime my throats starts to close and I have trouble breathing.

What do I do when all this happens?
I have started getting better at keeping the shock symptoms from being really severe.  The allergist has told me to take 75mg of Benadryl, 1 Zyrtec, 1 Zantac and a prescription dose of Gastrocrom.

The Gastrocrom is for people that have Mastocytosis which is a group of rare disorders of both children and adults caused by the presence of too many mast cells (mastocytes) and CD34+ mast cell precursors in a person's body.  Mast cells are granulated cells that contain histamine and heparin, an anticoagulant.  More information about these can be found by a google search.

Usually, these drugs just slow down the symptoms so I can get to the ER.  When this happens I have to use my EPI-pen and call and ambulance.