But...if these are just an allergic reaction to grass or something environmental, you can give him an antihistimine at home -- just be sure to watch him carefully and keep dosing him regularly for a few days so that his body has time to process the allergen out. 1-2 mg. Benedryl (regular pink pack -- generics available in diphenhydramine HCL) per pound of body weight. Two, 25 mg. tablets would be a good starting place.
A rinse in cool water would also make him feel better.
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