Hello, For The Last Fews Months I Have Been Experiencing

Hello, For the last fews months I have been experiencing scratch like lines on various parts of my body...chest, back, arms & legs. At times my face gets itchy and feels like there is something crawling in my eyes, nose & ears. I saw my primary doctor and she thought it may be scabies and treated me for that. I repeated it 3 times with the Permitherin. Made no difference. She referred me to a dermatologist...she said it was not scabies. So, I went for a 3rd opinion...not scabies, but had no idea what it could be and said the most bizarre thing, "you must be scratching yourself". I am definitely not causes these scratch like lines on me...I can't even reach where they are showing up on my back!!!
Went to 2 more dermatologist ...they were baffled too!! Now I am going to an allergist. He did a scratch test and nothing popped up. He took some blood work to check for celiac disease. That was negative. He told me to stop taking any and all vitamins until the next time I see him. I have an appointment with him in 2 more weeks at which time he will do a patch test. Since stopping the vitamins, I feel no different.
Other ways to describe how I feel, is sometimes it feels like I touch fiberglass or a pinchey woolly sweater. Sometimes my skin burns or feels hot without touch it. Every time one of those scratch like lines or marks appear, there is always a pin prink feeling, like I got bit or stunk by something just before it appears. I am at my witts end. During Christmas week (2016), it seemed like it was calming down, but now its getting intense again. I ASSURE YOU, I am not scratching myself. I am a person who takes care of my skin, moisturize 2x daily. Healthy diet. Take no Medication.