I see my therapist regularly and I generally just mention right away how I've been doing. I try not to focus too much on whether I'm going through an episode of a particular kind. Rather I just talk about how I feel, and then later we can decide whether or not it was an episode. That approach is helpful for me because if I wait until I'm sure I'm having an episode, I tend to underreport symptoms. Also, this way my therapist can kind of anticipate what's going to happen since my early warning signs are often fairly consistent.