E.A.
I have a 3 week old too, so your question caught my eye. MADD is multiple acyl-CoA dehydrogenase deficiency
You'll get lots of things when you google the actual words, not the acronymn. Here are two websites I saw. The second one down doesn't say anything until half way down under the section called "Putting heart into it". I hope this helps you find more information for your friends child.
http://www.dhss.mo.gov/NewbornScreening/MAD.pdf
http://www.phschool.com/science/science_news/articles/ket...