We do not recommend specific treatments, but I can tell you the medical standards.
There is no recommended does of tanning lights, none.
All are risky and you don't know what you have.
10 minutes of direct sunlight would be the maximum recommendation, maybe 5 if cloudy.
You might be covering up something that can be harmful, such as psoriasis which can be treated with light therapy, but specialized light.
There is no safe level of tanning salon lights.
IN addition, itching without a rash has a long differential diagnosis:
allergy, as you know
blood diseases, polycythemia vera
b vitamin deficiencies.
Hidden cancers and infections.
Gall bladder disease.
I would seriously talk to the allergist tomorrow, and i would avoid all tanning lights.
A full spectrum, imitation sunlight, lamp, such as an ott lamp, might helps, and is not giving you excessive doses of UV.
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