The purpose of this study is to provide an in-depth examination of the complex aspects of hereditary and pathological conditions arising based on psychogenetic factors, in particular, the disclosure of elements that determine the causes of their appearance. The following methods were used in the study: analytical, typological approaches, and generalization. It was found that genetic inheritance plays a significant role in the occurrence of autism spectrum disorders, bipolar disorder, schizophrenia, and other pathologies. The study revealed that the presence of a hereditary predisposition significantly increases the risk of developing these disorders in offspring. Genetic variations can affect various aspects of mental functioning and the molecular processes underlying these disorders. However, the important role of environmental factors in interaction with genetics has also been revealed. As part of this study, a plan was developed for a psychotherapist to work with parents raising a child with a mental disorder.