Pustular psoriasis advice needed

[Alleyes]

Hi there , I hope you can assist me in some way please with some advice , I have had Pustular psoriasis since 2016 and my latest GPP is ongoing since 23rd January 2025 , I am glad it isn't as bad as it was but at its worst I was sent to hospital twice being told I needed IV but was sent home which surprised me given the state my skin was also had cellulitis in both legs and feet , the antibiotics (3) different types didn't do anything , I started reading about Metformin being a help with all psoriasis types , I have asked my diabetic nurse and she hadn't even heard of pustular psoriasis infact 2 out 3 doctors I have visited hadn't either , this is a concern that there clearly isn't enough of any knowledge on pustular psoriasis and/or GPP , I get that it is rare but that doesn't mean its any less dangerous!
I don't mean any disrespect but because there is such a lack of knowledge from medical professionals I have had to come on to this forum to find people that have knowledge first hand along the lines of what is the best medication available in UK because nobody in medical profession seems to be able to help or even heard know what GPP is ! 
I'm in my 10th week and still having outbreaks of new pustules daily on various parts of my body and would appreciate any advice you could offer please .