Suggest Treatment For Red Dots On Skin Over The Forearms

I have recently been diagnosed with diabetes. I don't fully understand the readings yet but I am at 7.8? Also, other numbers have been 260 right after a large pasta meal, 124 and 78. My question is about the tiny red dots I get under my skin usually, on my forearms that come and go but sometimes all over. I am a very nervous person with anxiety, panic attacks, depression, fibromyalgia, sarcoidosis and chronic pain from neck and back injuries suffered in a MVA. Also, if I wear shoes and socks my feet become extremely itchy. Also, I get raised pimple-like red dots which are itchy and come and go. Furthermore, I get red hives all over my body and am holding water. My ankles and feet were real bad until an emergency room Dr. gave me water pills which brought them down but the rest of my body is holding lots of water. My Dr. took me off of Januvia thinking it is causing me to hold the water. My medications are: hydrocodone, lyrica, verapamil (high blood pressure) , clonazepam, and meletonin for the insomnia which I have also. The hives only come after I go to bed. I'm thinking a pill interaction with the melotonin. I've checked for bed bugs and changed detergents to the dermotologist type.