As of 2015, doctors are unsure of the cause of brachioradial pruritus, the condition that causes intense itching of the forearms without a rash, reports EmpowHER. Doctors theorize that neuropathy and allergic reactions are possible causes of the condition.
Individuals suffering from brachioradial pruritus have normal-looking skin with no rashes, explains EmpowHER. The condition seems to get worse with extensive scratching, and applying ice packs offers a quick method to stop the itching. Brachioradial pruritus is very uncomfortable, and sufferers often scratch the itching sensation to an extent where the skin starts to bleed.
Doctors theorize that neuropathy results after the disruption of the nerves by a particular event, such as injury or infection, and the individual perceives pain when there is nothing stimulating it, states EmpowHER. The pain transmits to the skin as an itching sensation that does not produce rashes.
The second theoretical cause of brachioradial pruritus, allergic reactions, may develop when Individuals with prior experience with chronic sun exposure acquire a histamine response in their skin that results in the intense itching without the development of any rash, notes EmpowHER. Treatment for brachioradial pruritus is still under investigation, but applying ice packs, capsaicin cream and lidocaine gel may help. Gabapentin or Amitriptyline help by blocking erroneous nerve impulses.