A mood disorder often manifested in despondent mood and loss of interest in familiar activities but possibly expressed as irritability and crankiness and difficulty concentrating or focusing on tasks:

Question

Quizplus · Accepted Answer

Childhood depression can manifest as a despondent mood, loss of interest in activities, irritability, crankiness, and difficulty concentrating, which aligns with the symptoms described.

A Mood Disorder Often Manifested in Despondent Mood and Loss