Depakote

Hi guys, looking for some advice although I know most of us aren’t medical professionals, just advice based on personal experience is great! I went on Depakote initially in 2021 and stayed on it until 2023, without any issues minus some unwanted weight gain. After I switched to Lithium, however I recently (2 weeks) again went back on Depakote and since increasing my dose to 500mg at bedtime, I have started to get a mildly painful rash…. Anyone have experiences like this with Depakote or any medication after having been on it in the past?