930192.fig.001a
(a)
930192.fig.001b
(b)
930192.fig.001c
(c)
Figure 1: Typical cases with CSU. (a) A case with dampness-heat diffusing downward syndrome of CSU manifested with red granulation and yellow pus. (b) A case with qi-stagnancy and blood-stasis syndrome of CSU manifested with dark redness or dim purple skin around granular tissues. (c) A case with vital-Qi deficiency and blood stasis syndrome of CSU manifested with gray-white and swelling granulation.