The monograph presents the results of the conducted scientific-research work on the study of clinical and genetic studies of early diagnosis of autism. In the course of scientific research the clinical and differential diagnostic features of various autism were revealed. The authors have proved the necessity of screening for signs of early signs of disorders of the nervous system. The monograph is intended for general practitioners, neurologists, and specialists dealing with this problem, undergraduate students, clinical residents, and trainees of physicians' advanced training courses.