To op, I haven't read this thread in its entirely so this may be a bit redundant. Firstly, I agree with the other posters who have said to be as honest as you can.

My kids have asked me numerous times why I take so many meds and I always tell them they help keep me from being sick. Since I have been sick for so long, I honestly believe that laying on the couch/sleeping and sometimes behaving erratically just feels normal to them. If they ask what's wrong when I am unable to function or cry all day long, I just tell then that I am very sad but will feel better soon. Then if I am manic, I still tend to isolate. However, when I do show them attention , it is dancing around the kitchen like ignorant fools and getting ice cream and then head out for very long drives. I read to to them night and on and on. The rare times I find myself stable , I am a healthy and consistent and available mom. No matter what though, I am certain they always know how much I love them. I snuggle often, put them in my lap, give lots of affection, and tell them I love them frequently.

My children are 8, 5 (almost 6), and 2.