Boxer Dog allergies

Question
hi, i have a 10 week old white boxer. the 1st week i had him he seemed to be in good health. now for the past 3 nights he seems to gain a lot of energy at night like he is possessed or  something. he starts to scratch like crazy and he turns pink around face and under the tail and he just runs around bumping into things. this is not his normal behaviour. i took him to vet and he gave me vanectyl p. after taking the pill he will calm down. but every time night time comes he acts up again. any answer or ideas to help him are greatly appreciated. thank you.

Answer
Hi Dennis,
Can you answer a few more questions ? What are you feeding him and how often? How long is the puppy staying alone during the day ? Did the vet check his hearing and sight ? Does this puppy have blue eyes or brown ? Any markings of color on the body ? Did the vet check him for earmites ? Have you seen any fleas on  him ? Does the puppy have any bald spots on his body ? Please answer these questions for me and I'll try to help. Thanks
Angela Donald
Canine Behavior Consultant
http://www.hitowerboxers.com