my dad has got chronic psoriasis and although he doesn't admit it i know it gets him down, at the moment its (barely) controlled by several creams and regular baths (everyday) but, it still causes him pain, especially since the weather is so cold, if anyone has any advice to relieve the symptoms (or even a temporary cure) it would be much appreciated – seriously we live in the uk so things that we could get would be a bonus, thank you and have a merry Christmas and a happy new year 
x
Well homeopathy certainly will NOT do anything – it's nothing more than plain water or sugar pills.
There is no cure for psoriasis, and treatment options vary for each individual. I seriously doubt you'll find anything in ayurvedic because there is little evidence that it works for any condition. it is based on pre-scientific concepts, they do no research and probably have no idea of what psoriasis actually is.
I have psoriasis. I manage it with moisturizers and hydrocortisone cream when necessary. I use a product called Dermaid – I don't know if its available where you are, but it works very well and clears up outbreaks: mydr.com.au/medicines/cmis/de… but my psoriasis is not all that bad. good luck.
"Which one is best for psoriasis treatment ayurvedic,homeopathy or allopathy?"
You seem to be making a false dichotomy. The one solution you haven't seemed to consider is medicine.
I would give that a go.
The best treatment is to see and know.
In order to see, you'd better not be blind.
In order to know, you'd better not be stubborn.
For the blind-and-stubborn, try and see what allopathy does.