I'm not sure if I've depression (or BP I), but I've the following symptoms: I don't usually feel sad (sometimes I feel deep sadness for no reason), but most of the time I lack motivation and interests, and any sign of vitality in general. Like people would be happy if they had an opportunity to travel or if they won something, but not me. I also have some physical symptoms like numbness in my legs, light stomach pain, and nausea. I also feel there is a cloud in my head that prevents me from concentrating and thinking right.

How does depression manifest itself in you?