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Tammi Curtis Carr, the daughter of former Michigan defensive back Tom Curtis and daughter-in-law of former Michigan coach Lloyd Carr, is asking for a miracle.

Her son, Chad, nearly 4 years old, was diagnosed Tuesday with an inoperative tumor in his brain stem.

Carr, describing her son as "precocious, beautiful and smart," took to Facebook on Wednesday to ask for help.

"We now need prayers and it's my hope that this goes viral and millions fall in love with my little man and send him prayers," wrote Carr, a mother of three sons. "It's going to take a miracle and I believe it can happen and I hope you will help and spread his story!!"