Augmented Reality to Reduce Pain During Botulinum Toxin Injections in Cerebral-palsied Children

Inclusion Criteria: * Cerebral-palsied children, whose diagnosis of cerebral palsy was confirmed by a neurologist reported in the medical record * Aged 3 to 8 years (until the day before 9 years old) * With a functional level of Gross Motor Function Classification System (GMFCS) I, II, III or IV * Treated by TB injection (child with or without a history of TB injections) * With a sufficient level oral expression to respond to questionnaires and to interact with the nurse for the use of augmented reality device * Obtaining written parental consent and oral approval by the child Exclusion Criteria: * Impossibility to assess pain during the session by the FLACC scale or FPS-R scale * Visual disturbances excluding to use of the augmented reality device * Severe cognitive impairment making it possible to answer questionnaires * Child of functional level child GMFCS V * Child with a specific request for distraction (eg if the child demands to watch a cartoon). This in order not to interfere with the coping strategies used by the child. * Refusal on the part of the parents to sign consent, and refusal on the part of child to use the tablet * Child not benefiting from social security coverage