Picture warning please help

Hey vets so my dog is having kinda flakes in his fur even after washing, he has redness and around his butt, he is sneezing and is having nasty burps. Unfortunately the vet can’t get me in until three weeks!!! I need help is there anything over the counter I can try for him. I feel so bad.

Hello and thankyou for the pictures.  How long is It going on for and how comfortable is your dog?  It sounds to me, having seen the pictures, that 3 weeks may be too long for this and that if you ask the receptionist for the urgency of the case to be triaged by a vet or nurse - perhaps you could offer to email the pictures - they might be prepared to review it or discuss interim treatments.  'Itchy skin' with a low-key dodgy tummy might reasonably wait for three weeks, but this looks intense. If the vets are not prepared to escalate the urgency of this case, then they may need to make recommendations to keep your dogs skin from getting worse in the meantime. Is that butt getting rubbed?  If so, pain might be a possible cause.  There may be a possibility of mites, fleas, tapeworms or of internal diseases such as pancreatitis causing pain and intensifying scratching behaviour.  Anal glands and allergies may also be on your vets list. Please will you let us know what happens next? Liz, BVSc veterinary science (Not an MRCVS vet).