Hi.
This could be auto-immune, there are a few auto-immune illnesses which can cause the skin to feel burning and itching with sunlight.
First you need a full blood panel for auto-immune doing , this being ANA, Anti-DNA, ACA, LA, etc, etc.
Then also have your thyroid tested also by blood. Overactive thyroid can cause the skin to feel itchy, and burning. So can hormones.
Then i would get a full bloodcount done also including liver function tests.
The liver can make the skin itch.
Have you had any testing for this problem, if so post the results so i can take a look please.
There are multiple autoimmune illnesses, which can cause the skin to itch and burn, some off them listed Lupus, Rheumatoid Arthritis, Anticardiolipin Syndrome, Primary Biliary Sclerosis, etc, etc,
I would suggest a full blood work up is needed to rule out what could be causing this problem for you.
Good Luck
Nicola
U can go to mayoclinic and type your symptoms and it will give you some ideas to look in to
It can be an aad I'm not a doctor but I have been doing a lot of research my self because I have a lot of symptoms going on too. I have read a lot about lupus it seems to carry your symptoms, but that means nothing have u researched it any? Or have you had an ana test at your pcp?