The simple idea
Depression isn't one feeling — it dims several systems at once:
- Mood: sad, empty, or hopeless
- Interest: nothing feels enjoyable any more (doctors call this anhedonia)
- Energy: everything feels heavy and difficult
- Thinking: poor concentration, guilt, hopelessness
- Body: changes in sleep and appetite
Two symptoms are the "front door": low mood and loss of interest/pleasure. If those have lasted most of the day, most days, for a couple of weeks, and other symptoms have joined them, we start thinking about depression.
Why "I'm tired" isn't enough
If a patient says "I'm tired," that's a single clue, not a diagnosis. A caring doctor gently explores: how long? still enjoying things? sleep? appetite? concentration? guilt? and — always — safety.
The most important question 🚨
Depression can bring thoughts of death or suicide, so we always ask — kindly and directly — about them. Asking does not put the idea in someone's head; it opens a door to help. Thoughts, any plan, and safety right now all matter.
One more thing
Very severe depression can occasionally include psychotic thoughts — for example, a false belief of being ruined, guilty, or even that one's body is "dead" or rotting. This isn't ordinary pessimism; it's a sign the depression is severe and needs urgent help.
Quick check ✅
- What is anhedonia?
- Why is asking about suicide a safe and important thing to do?
Remember this 🌟
Where we're going next → Now the opposite pole — when mood and energy swing too high (Concept 18).