**blue Joints In Hands?? Please Help With Any Info!!!

About 2 months ago I noticed the joints in my hands would start turning blue throughout the day, and by the time I went to bed they were the darkest. I do not have circulation problems and my hands are never cold when this happens. I have not experienced any pain in my hands or joints just the discoloration. The only medication i'm taking is paxil but my doctor said that was not a factor since i've been on it since the beginning of the year. I have done about 4 different blood tests and nothing unusual was found. The only other symptom I have been experiencing is itching all over my body, and around my nose and mouth will turn red like a rash without me even touching it. I do not have any allergies and I haven't been doing anything different...So right now I just have these two strange symptoms and no answers if you have any information or advice please write...I am so appreciative for you taking the time to read this. Have a nice day :d