Dravet syndrome (DS), Lennox‐Gastaut syndrome (LGS), and CDKL5 deficiency disorder (CDD) are rare, severe, treatment‐resistant developmental and epileptic encephalopathies with distinct etiologies (Camfield, 2011; Gataullina & Dulac, 2017; Olson et al., 2019). Here, CDKL5 is linked to Dravet syndrome.