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.
Two U.S. states currently do not observe daylight saving time: Arizona (except the Navaho Nation) and Hawaii. The U.S. territories in the Pacific and the Caribbean also do notâ¦ observe daylight saving time. Until 2006 or 2007, much of Indiana did not observe daylight saving time, but that is no longer the case.