Thank you for your query on Healthcare Magic.
I think it is glycine synthase deficiency
These children presents with aggressive behavior, retardation, behavioral problems, and speech problems.
It is a genetic disorder involving the amino acid
glycine which leads to brain damage
by elevated glycine in the blood.
It is treated by avoiding glycine and glycine precursors containing diet if it is glycine synthase deficiency.
Consult the pediatrician
for further advise.
Hope I have answered your query.