Guttate psoriasis after tonsillitis!

I have suffered with guttate psoriasis from being about 6 years old when I first had a flare up, from what I recall it covered my entire body and face. I had a second flare up at 11 and a third at the age of about 16. From then on I had patches on both of my arms pretty much constantly but as it rarely appeared anywhere else on my body and when it did it was the tiniest amount that cleared up without treatment I chose to leave it be. However I am now 22 and have just had recurring tonsillitis twice. My arms have grown a lot worse I have psoriasis all over my chest and tummy, back as well as my face and hairline. I am also starting to see tiny spots of it appear all over both my legs. It's getting worse by the day and it's driving me mad!!!! I have started to use dovobet however it is very hard to apply to each individual dot of psoriasis without getting it on the normal skin in between and I am also unable to use it to treat my face. I have very sensitive skin anyway as I am a very fare redhead! Can anybody suggest a quick working treatment for my face which won't damage my skin. I accidentally got a tiny bit of dovobet on my chin from leaning on my shoulder and it burns so much!! Thank you for listening to my life story! Any help would be greatly appreciated!!! I am very worried it may be here to stay!!