English to Spanish Medical Medical (general)

He traducido "is that it is more likely to be a melancholic depression" por "es que parece una depresión melancólica". Por tanto toda la frase queda "Una de las primeras observaciones en la depresión bipolar es que parece una depresión melancólica". El problema es que no me acaba de sonar bien y no estoy segura. ¿Qué os parece?

One of the earliest observations about bipolar depression is that it is more likely to be a melancholic depression. According to DSM-IV, the melancholic subtype is a depressed state characterized by anhedonia, excessive weight loss, psychomotor agitation or retardation, insomnia, worsening of symptoms in the morning, early morning awakening and excessive guilt.