My little boy seems to have these spots that come and go , from his head to his tail, the vet was unsure & gave me some sebocalm.
they don't seem to cause irritation , it also seems to be giving him dry skin too, can anyone give any suggestions as to cause/remedy?

I have a shar pei ( have recently posted a question myself).  As this breed is known for skin problems amongst other things!  we have tried numerous remedies.  One of the best we have found and it keeps her coat in wonderful condition is to feed her lots of oily fish in with complete meal.  She particularly likes tuna (slight side effect smelly wind!).

Best regards,
mm..

He could be allergic to something in his food or something in the house ( air freshners /carpet freshners etc ) If he is on a food that contains Gluten try a Gluten free one -Autarky / Supa dog sensitive
hth