FOSB and movement disorder: Furthermore, 7‐NI has been reported to prevent L‐DOPA‐induced FosB/ΔFosB upregulation in NADPH‐d‐positive interneurons in the DL and DM striatum (Padovan‐Neto et al. 2015), suggesting, to some extent, a colocalization of NADPH‐d/nNOS‐positive interneurons with FosB/ΔFosB that can be reduced following chronic treatment with a NOS inhibitor in this type of movement disorder.