Annotation. The research is devoted to the study of clinical signs of painful and nonspecific somatoform disorders in children of early and late adolescence, depending on sex, place of residence, and study. The study examined 56 adolescent children with pain and non-specific syndromes who were treated in the MNP “Khmelnytskyi Regional Children's Hospital” of the Khmelnytskyi Regional Council and in the MP “Khmelnytskyi City Children’s Hospital” of the Khmelnytsky City Council. The average age of the children was 14,0±4,53 years. Among them, children of early adolescence (10-14 years) accounted for 57.2%, and late adolescence (15 years 11 months 28 days) – 42.8%. The clinical signs of pain and nonspecific somatoform disorders in the children we examined were as follows: headache, thermoregulation disorder, fibromyalgia and arthralgia syndrome, nonspecific back pain, asthenic syndrome with decreased work capacity, increased meteorological sensitivity, and impaired concentration. Nonspecific persistent pain syndrome occurred in 56 children, in particular, cephalic pain – in 77.4 %, polyarthralgia – in 8.9%, fibromyalgia syndrome – in 8.5%, nonspecific back pain – in 13.4% of children; thermoregulatory disorders were identified in 42.7%, asthenic syndrome – in 35.3% of children. It shows that among pain somatoform disorders, headache, in particular, tension headache and migraine, occupies the first rank in children. Stress, tension, and sleep disturbances were predominant among the triggering factors. Therefore, among adolescent children with painful and non-specific somatoform disorders, cephalalgia, with a predominance of tension headaches, and long daytime low fevers are most often diagnosed, as a manifestation of autonomic somatoform dysfunctions with impaired thermoregulation. At the same time, migraine, episodic symptoms associated with migraine, as well as trigeminal variants of headache and long-term pain of other localization were found in isolated cases. The age dependence of primary headache has been revealed: tension headaches occur more often in children of early adolescence, and migraines in children of older adolescence, which is important to consider in the differential diagnosis of headaches, since the treatment and prevention of attacks of these forms of headache are completely different.