Comes and goes

Hi all, I was diagnosed with psoriasis when I was in my teens after having most creams I was then referred to dermatology who confirmed a psoriasis diagnosis. I've always had it in the same place on my pubis and top of my thighs no where else which is quite bizarre! Anyway I've not had it for a number of years all of a sudden its back and worse as ever now I don't know why but it's really flared up nasty silvery patches. I found the tar stuff they gave when I was kid wasn't very good and to be honest is stunk aswell! When I was younger and always had it I found it went when we went on holidays to Greece completely and wouldn't return for a while and also when I was older the sunbeds cleared it. Anyways I've been the doctors and they gave me dovobet as this is a treatment I've been using it a few days and found it's calming down now. Does anyone else suffer with it now and then and in the groins region?