A single reaction-diffusion equation for the multifarious eruptions of urticaria
Fig 4
Comparison of the expanding speed of wheals developed by intradermal injection with that in urticaria using the mathematical model.
(A) The expanding speed approximated by the Eq (4) for the injection of 10 μg/ml histamine. The maximal speed is determined in the initial stage. (B) Expanding radius of the wheal in the model (1). The parameters chosen were listed in Table 1 (Set I) (C) The expanding speed calculated from (B).