This study aimed to exhibit the effects of early physiotherapy and discusses post-treatment results on a patient with incontinentia pigmenti (IP) with encephalocele. Physiotherapy evaluations of the child included cognitive, fine and gross motor development assessed with the Bayley Scales of Infant and Toddler Development - Third Edition (Bayley-III), disability level with the gross motor function classification system, gross motor function with the gross motor function measurement (GMFM), and tonus evaluation with the Modified Ashworth Scale. The child was included in a physiotherapy and rehabilitation programme based on neurodevelopmental treatment three times a week. Although cognitive and motor development according to Bayley-III improved in the present case, motor and cognitive retardation became more apparent with growth. GMFM results indicated a large improvement from 5.88% to 47.73%. Presentation of this case shows the significance of early physiotherapy in this first study on physiotherapy for IP during the early rehabilitation process.