@caswal have you consulted a neurologist? Itching is a mild form of pain, and yours has now progressed. Arm pain can be caused by a nerve entrapment anywhere along the path of the nerve from the spine to your hand. I have had nerve issues from thoracic outlet syndrome and from a spine problem that caused spinal cord compression in my neck. A neurologist can look for areas of nerve entrapment or a disease that could cause the symptoms. This is the first step to figure out what the problem is.

Good evening @caswal. Welcome to Connect with all its compassionate acceptance and willingness to help. First of all, I don't know if Brachioradial Pruritis is my diagnosis. My itch seems to be neuropathic in nature and quite a few allergens seem to vie for the cause. I have atopic dermatitis with proof from patch tests on my back revealing the antagonist. Right now, I am in "temporary" remission. I have changed all of my bedding and washed everything including all my clothes with laundry soap that is on the safe list based upon my test results.

My last bout was over a month ago and evidently related to the stress of my first airplane ride to visit grandchildren in Texas since COVID. I am also facing knee surgery in a few weeks so spent quite a bit of time in a wheelchair.

I have no pain n my neck or back. What helped me turn the corner was 8 weeks of the "sun lamp" twice a week and an OTC, Allegra, every morning in addition to tacrolimus ointment twice a day.

Have you seen a dermatologist yet or had any testing performed? It helps to at least find a direction in which to begin. There are a couple of anti-itch medications in the third round of testing at the national level. Maybe someday we will have a new and more successful treatment.

May you be free of suffering and the causes of suffering.
Chris