This is a severe form of progesterone allergy, or hormone allergy, or progesterone mediated progesteroane hypersensitivity. Severe forms can cause so much throat swelling that a severe (anaphylactic) reaction can occur and some deaths have been reported. Milder forms, which I see, almost always involve red skin on the chin and cheeks (think Roseacia that gets worse around the menstrual cycle). This typically appears on the bosom and neck, the cheeks and chin and sometimes the forehead and across the top of the back. Thing that tells you it is hormone allergy (usually to progesterone) is that it gets worse during the premenstrual period, better when the period begins. We deal with this by using sublingual drops of progesterone (homeopathic doses, 0.00005mg) which often blocks the problem entirely. For more about this read my section on “hormone imbalance” on the website. Questions anyone?