A peanut, a bee sting, or a dose of penicillin can be harmless the first time and life-threatening the next. Type I hypersensitivity runs in two acts. First a quiet setup arms your mast cells. Then comes the reaction. Walk the cascade, then run a real exposure and treat it.
The IgE cascadestep 1 of 7
Press Next and the picture follows along.
Type I hypersensitivitypress Next to begin
IgE made?—
Mast cells armed?—
Reaction?—
What the body is doingminute 0
Blood pressure and airway over one hourdrag the clock