My unbearable itching story started seven months ago. I was having no rash at all (only after the cruel scratching, my skin would get the dermographia). I also have an Autoimmune Thyroiditis, two past episodes of Urticaria and white spots of Vitiligo. However, this unusual itch was different from the urticaria as it had no visible sign, only the "itch to the bone" some of you described above. No antihistamine would work. I even tried acupuncture, but in vain. The blood tests were (frustrating) in the right parameters.
My itch has diminished since January. It did not go away but it became bearable; it is now sometimes itching during the day and almost always before going to bed (the cruelest itches were always during the night).
I attribute this blessed relief to three things:
I prayed and focused more on my spiritual needs. I am a Christian and I prayed to Saint Ephraim the New, Saint Nectarios of Aegina and Saint Panteleimon.
I started to admit that it might be an emotional problem. I did not want to accept it before, but I started to consider that my emotions might try to escape outside through my skin. I even linked a stressful episode from September with the debut of the unusual itch. I also noticed that when I am very, very tired, the itch becomes unbearable.
I went on a gluten free diet four months ago, to protect my thyroid.
I tried to sum up as much as possible. I hope this will help. I know how frustrating this affliction is, and so misunderstood by others, including doctors. But hang on, it will go away just like it came!