my dog has itchy bumps all over hi body

Question
this happened in just 2 hrs. bumps all over his skin. he's a boxer and i cant get any proper answers. could you please help me....

Answer
Sounds like an allergic reaction.  I hate to needlessly send you to an emergency vet, but it could get worse.  If you want to risk it, you could try up to 2mg of Benadryl per pound of body weight every 8 hours.  I would rather see a vet visit.  Why do these things always have to happen on a weekend?