In many cases it can also be used as an antidepressant, most of the time
for depressive realism. In children it is also indicated
for treatment of Lennox-Gastaut
syndrome (a disorder that causes seizures and developmental delay). It is also Food and Drug Administration (FDA) approved for, and now most frequently prescribed for, the prevention of migraines. It has been used by psychiatrists to treat bipolar disorder,[6][7][8] although it is not FDA approved for this purpose.