I'm 22 years old and since three or four years ago, every now and then my mood would hit a low point, I couldn't be interested in anything, I even hated everything, and I would have thoughts of self-harm or suicide. However, sometimes I would suddenly become very excited and passionate about everything. However, no matter how high or low the mood is, as long as one is alone, one feels out of place in the world. Each time this state lasts for ten days or so it returns to normal, but the normal intervals are getting shorter and shorter. Is there something wrong with me psychologically?

Hello! Based on the mood swings you describe, in terms of symptoms, duration and severity, this is likely to meet the criteria for a depressive episode. It is recommended that you see a specialized doctor in a psychiatry department as soon as possible to assess the degree of depression through detailed questioning and psychological testing, and to intervene in a timely manner for treatment.