Hi, my 7 month old s sweat odor has changed. I noticed the difference yesterday for the first time. It s like a stinky feet smell but is almost a touch sweet-smelling too. I can smell it most prominently on his back (which he has been laying on). He got a thorough bath earlier today and then I noticed the smell again tonight after a nap. He changed formulas per his dietitian s recommendation 1 week ago. He is also been eating more baby food. Could this be the cause? It s different than his normal post spit up smell. I am worried there could be a bigger issue going on.
Abnormal odor can be a sign of metabolic disorder due to abnormal metabolism of amino acids, metabolites are secreted in urine and sweat leading to abnormal smell. Stinky feet smell suggests Isomeric academia, or the child may have a mild form of MUD. In any case a complete metabolic screen is warranted before making a diagnosis.