Epidyolex® in Lennox Gastaut, Dravet Syndrome and Tuberous Sclerosis Complex: an Observational Study in ITALY

Inclusion Criteria: * Adult patients, and minor patients ≥ 2 years old diagnosed with LGS, DS or TSC. * Clinical decision, taken by the physician, to initiate Epidyolex® * Adult participants, parents or legal representatives must be willing and able to give informed consent/assent for participation in the study. Exclusion Criteria: * Participants currently using or have used recreational, medicinal cannabis, or cannabinoid-based products within the three months prior to study entry and are unwilling to abstain from these products for the duration of the study. * Any reason, according to Investigator's judgment, able to compromise compliance with procedures outlined in the study There will not be any other specific exclusion criteria; however, contraindications, special warnings, and precautions for use as detailed in the Summary of Product Characteristics (SmPC) (particularly related to raising of aspartate aminotransferase \[AST\], alanine aminotransferase \[ALT\], and total bilirubin) will have to be considered by the treating physician.