Hello, I m 39 years old, female. Every month a day or two before my periods, I develop a hives-like rash all over my body. I notice it starts as a tingling sensation on my lips and fingers followed by fullness in stomach - usually diarrhea, white tongue, and mouth ulcers. This problem has been recurring for the past 3-4 months and the hives like rash have increased in intensity each time. On advise of a skin specialist taking Zempred 8 in the morning and Allegra 120 and Xyzal M in the evening. The medicines help with the symptoms but not the cause. Please help!