White spots on the nails may indicate a deficiency in trace elements or calcium.

A 1-year-old baby has had recurring diarrhea since 9 months ago, with the front part of the stool becoming dry and hard after 9 months. Currently, the baby has poor appetite, eats very little, looks pale and thin, occasionally gets small rashes on the face, and has restless sleep during the daytime. The parent asks about medication for nourishment and dietary therapy recommendations.