developmental regression

loss of developmental skills, as manifested by loss of developmental milestones

en-US/dɪˌvɛləpˈmɛntəl ɹəˈɡɹɛʃən/
en-GB/dɪˈvɛləpˈmɛntəl ɹɪˈɡɹɛʃn/

カテゴリ：

developmental disordermedical finding