Peaks And Troughs In Your Perception Of The World

Hello. Any ideas what is the name of the constant psychological state of a person who has peaks and troughs in his perception of the world? In about three months. Three months - positive attitude, energy, desire for life, development, work, love, etc., the next, from a month or so - up to three months - a full hole, gloomy thoughts, everything is dramatic, addictions that prevent of everyday life, in addition to emotional, health also deteriorates. When intolerance to this condition comes - comes the other, which I described first. Maybe 'coming' is not the right word - it goes to the first state, because the transition is desired / consciously requested. Visible change - no, it is difficult to understand by others, that is, the person is well controlled, also aware of what is happening. I do not expect the name of an accurate diagnosis, but if there are specialists from the commenters - they can also make assumptions about the diagnosis. Thanks.