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 is a rare disease caused by an autoimmune response to endogenous progesterone in women during their reproductive years [1]. Skin lesions typically occur due to increases in progesterone during the luteal phase of the menstrual cycle [2].
Scleroderma is a group of autoimmune diseases that may result in changes to the skin, blood vessels, muscles, and internal organs. The disease can be either localized to the skin or involve other organs in addition to the skin. Symptoms may include areas of thickened skin, stiffness, feeling tired, and poor blood flow to the fingers or toes with cold exposure. One form of the condition, known as CREST syndrome, classically results in calcium deposits, Raynaud's syndrome, esophageal problems, thi