anyone with sun alleregy, HELP!! Iam desperate, how to treat and sooth and prevent rash?

[dangerousliaison]

I have developed a sun allergy over the past 2 years, it has been pretty mild so far affectting feet, toes and arms only. However So far this year It seems quite moderate starting last week and the blisers on my toes are very painfull and becoming quite big, my arms legs neck and back are affected even where I have been covered up. I have been using factor 50 and still I had mild sunburn and my arms and hands and feet are absolutly covered, a little on my legs and back but legs and back where covered with clothes. this is the result of just one days exposure at begining of week with factor 50 and it seems to be just getting worse with new spots and blisters appearing even now.

I havent been to DR as i am aware there is very little that can be done other than light therapy which i dont really want, i know its sun allergy as my sis has same. I have been bathing in bicarb and it sooths for a moment but just wanted advice for any tratments or prevention that work for others.

@JakeyDog
Have been searching through threads for info & saw this post. Iwas told only light therapy or a topical cream if I break out. Are your tablets preventative or relieving? Thanks

My daughter started suffering with this 2 years ago whilst on holiday in Turkey. The chemist there gave her an antibiotic cream which cleared it up but also advised her to use an allergy or sensitive suncream. Like others have suggested she has found the Piz Buin has solved the problem for her and was fine using it on holiday in Greece last year. Before lockdown we used to find it for sale more cheaply in The Original Factory Store.