Our Companies. The Main Street America Group was established in 1923 with the founding of National Grange Mutual Insurance Company (NGM), which was created to provide affordable insurance coverage to Grange Fraternity members in New Hampshire.
Autoimmune progesterone dermatitis: Introduction. Autoimmune progesterone dermatitis: A skin rash that appears to be a result of the body's immune reaction to progesterone. As progesterone production is linked to menstrual cycles, the rash occurs usually in the week before menstruation until a few days after menstruation starts.
This is when the blood level of the sex-hormone progesterone rises. The skin rash happens as an autoimmune response to the body's own progesterone, hence its name. Within a few days of menstruation when progesterone level falls, there is partial to complete resolution of the rash. It will recur during the next cycle.