Mixed connective tissue disease (MCTD) is a rare autoimmune disorder. An autoimmune disorder is one in which the immune system mistakenly views the bodyâs own tissues as âinvadersâ and attacks them.ixed connective tissue disease has features of three other connective tissue diseases: 1  Systemic lupus erythematosus (SLE) â An inflammatory disease that can affect many different organs. 2  Symptoms include fever, fatigue, joint pains, weakness, and skin rashes on the face, neck, and upper body.
Almost all of the US state of Arizona does not use Daylight Saving Time (DST), and uses the time zone Mountain Standard Time (MST) all year.
You set your clock forward 1 hour in the spring when DST starts (= lose 1 hour), and back 1 hour when DST ends in the fall (= regain 1 hour). North America, Central America, Europe, Asia, northern Africa. Many countries in the Northern Hemisphere (north of the equator) use DST in the summer time, but not all.