Low mood and changing sleep: notice the pattern, not just the hours

For one week, note when you went to bed, roughly when you fell asleep, whether you woke in the night or unusually early, and when you got up. If you are sleeping longer than usual, record that too. NIMH describes difficulty sleeping, early waking and oversleeping among possible depression symptoms. None of these alone diagnoses depression, and a single bad night says little about a longer pattern.

Alongside the times, write down whether you still feel tired, have lost interest in usual activities, feel low or irritable, or find work and household tasks harder. A night-shift schedule, noise, pain, medicine or another health issue can also affect sleep. Tell a clinician about these circumstances rather than assuming the mood caused the sleep problem or the reverse.

A useful record has one more line: what became difficult the following day? Perhaps you missed the first hour of work, could not concentrate, stopped answering a friend or could not enjoy a usual activity. NHS guidance treats the effect on daily life as part of the picture when someone seeks help for low mood. The number of hours in bed is less informative than whether you are rested and able to do what matters to you.

Keep the note simple; you do not need a sleep-tracking device or a perfect diary. If your home is shared or work hours change, write that down. A regular waking time and a manageable wind-down routine may support sleep, but a routine alone is not a treatment for persistent low mood. Avoid blaming yourself if reasonable changes have not solved it.

Seek a qualified clinician or mental-health professional if low mood lasts, sleep disruption keeps affecting everyday life, or you are struggling to cope. NHS advice points to assessment when low mood has continued for more than two weeks, but you can ask for help earlier if symptoms are severe or worrying. Bring your short record and ask what else might be affecting sleep and mood; an assessment may consider other health conditions as well as depression.

Our depression symptom check asks about the last two weeks and may help you organise how often sleep and other symptoms have troubled you. It cannot identify the cause of sleeplessness or oversleeping, diagnose depression, or replace a conversation. If you are thinking about harming yourself or cannot keep yourself safe, seek immediate local emergency or mental-health support rather than waiting to finish a questionnaire.