Telogen effluvium is one of the most common causes of alopecia. It is a scalp disorder characterized by excessive hair loss that can contribute to low self-esteem and psychiatric morbidities associated with poor quality of life. Various factors, such as drugs, trauma, emotional and physiological stress, can lead to the development of telogen effluvium. Telogen effluvium can present as acute or chronic hair loss with symptoms such as trichodynia. Diagnostic tests that may be used include piltraction, dermatoscopy, hair wash test, trichogram, phototrichogram and scalp biopsy. In the treatment of telogen effluvium, it is essential to identify and eliminate the causative factors and to use drugs such as corticosteroids, minoxidil or novel treatments such as CNPDA (caffeine, niacinamide, panthenol, dimethicone and an acrylate polymer) and the multimolecular agent ALRV5XR. The aim of the present study is to obtain an updated view on telogen effluvium, its etiopathogenesis, relationship with other pathologies and treatment.