Seasonal depression and low mood

A person may notice low mood, loss of interest, fatigue, irritability, difficulty concentrating, changes in sleep or appetite and social withdrawal during a recurring season. Symptoms may improve at another time of year, but that pattern does not make them less real or less disruptive.

Seasonal symptoms can overlap with depression, insomnia and other sleep or medical conditions. A clinician will ask about timing, daily function, medicines, light exposure, sleep and any history of mood elevation or unusual energy.

Track mood, sleep, energy and concentration across the year so you can describe when changes begin and ease. Keep a steady wake time, seek safe daytime light, maintain regular activity and stay connected with supportive people. These steps complement professional care.

Arrange an appointment before the season when symptoms usually begin if possible. Discuss talking therapy, medication and whether a prescribed light-based treatment is suitable; do not buy or use a light device without checking safety, especially if you have an eye condition or take medicines that increase light sensitivity.

Seek medical advice if seasonal low mood affects work, study, self-care, sleep, appetite or relationships, or if fatigue and daytime sleepiness make driving or other tasks unsafe.

Get urgent help if you have thoughts of self-harm, cannot stay safe, become severely confused, or experience unusually high energy with little need for sleep and risky behaviour. Contact local emergency or crisis services and involve someone you trust.

Ask whether your symptoms show a seasonal pattern, how to prepare before it returns, which treatment is appropriate, and what warning signs should prompt faster contact.