It states the following about pyromania:
Pyromania is characterised by a recurrent failure to control strong impulses to set fires, resulting in multiple acts of, or attempts at, setting fire to property or other objects, in the absence of an apparent motive (e.g., monetary gain, revenge, sabotage, political statement, attracting attention or recognition). There is an increasing sense of tension or affective arousal prior to instances of fire setting, persistent fascination or preoccupation with fire and related stimuli (e.g., watching fires, building fires, fascination with firefighting equipment), and a sense of pleasure, excitement, relief or gratification during, and immediately after the act of setting the fire, witnessing its effects, or participating in its aftermath. It also notes that pyromania has no relation to intellectual impairment, substance abuse, or other mental and behavioral disorder. ICD-11 was produced by professionals from 55 countries out of the 90 countries involved and is one of the most widely used reference worldwide by clinicians, with the other being the Diagnostic and Statistical Manual of Mental Disorders (DSM-5-TR from 2022, DSM-5 from 2013, or their predecessors)

DSM
The American Psychiatric Associations Diagnostic and Statistical Manual of Mental Disorders, First Edition, released in 1952, categorized pyromania as a subset of Obsessive–compulsive disorder. In the Second Edition, the disorder was dropped. In the Third Edition, it returned under the category of impulse-control disorders.The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision (DSM-5-TR), released in 2022, states that the essential feature of pyromania is "the presence of multiple episodes of deliberate and purposeful fire setting."
This includes the complex understanding of factors such as individual temperament, parental psychopathology, and possible neurochemical predispositions. Many studies have shown that patients with pyromania were in households without a father figure present.Pyromania can be common in those with substance use disorders, problem gambling, mood disorders, disruptive behaviour, anti-social disorders, another impulse-control disorder. Environmental
Environmental factors that may lead to pyromania include an event that the patient has experienced in the environment they live in. Environmental factors include neglect from parents and physical or emotional abuse in earlier life. Other causes include early experiences of watching adults or teenagers using fire inappropriately and lighting fires as a stress reliever. Treatment and prognosis
The appropriate treatment for pyromania varies with the age of the patient and the seriousness of the condition. For children and adolescents treatment usually is cognitive behavioral therapy sessions in which the patients situation is diagnosed to find out what may have caused this impulsive behavior. Once the situation is diagnosed, repeated therapy sessions usually help continue to a recovery. Other important steps must be taken as well with the interventions and the cause of the impulse behavior. Some other treatments include parenting training, over-correction/satiation/negative practice with corrective consequences, behavior contracting/token reinforcement, special problem-solving skills training, relaxation training, covert sensitization, fire safety and prevention education, individual and family therapy, and medication. The prognosis for recovery in adolescents and children with pyromania depends on the environmental or individual factors in play, but is generally positive.