Telogen Effluvium (TE) is a heterogeneous disorder, which is characterized by increased teloptosis. TE is essentially a violation of the biorhythm of the hair cycle, which can develop according to several scenarios, classified according to the main pathological mechanisms. This classification focuses on the clinical prognosis and should be a criterion for choosing therapy. Among the features of this condition, it should be noted the high prevalence, which reflects the complexity of epidemiological observations: Deceptive simplicity of clinical signs of TE and their significant coincidence can become a diagnostic trap among some forms of diffuse hair loss. The reasons for the development of TE can be different types of triggers. The results of trichoscopy do not depend on the factors that caused telogen hair loss. Although from a medical point of view, this disease is not life-threatening, it represents a significant psychosocial problem for many patients. Perhaps the most difficult from a psychological point of view are patients with chronic TE. In 30% of cases, chronic TE can be somatoform, as a physical symptomatic manifestation of unresolved emotional conflicts. Psychological consequences of hair loss are difficult to distinguish clinically from existing psychopathology. A complex diagnosis of exclusion is psychogenic pseudoeffluvium. The ideal choice in the diagnosis and management of TE is the objectification and monitoring of quantitative measurements of hair with the help of a phototrichogram and/or quantitative trichoscopy. And in addition to the objectification of the diagnosis, the quantitative measurements have a psychotherapeutic effect. Considering that knowledge of the evidential level is limited in nature, TЕ can become a therapeutic problem.