Reading your mood chart: patterns worth looking for

A mood chart is only as useful as your ability to read it. The shapes that show up over a few weeks are surprisingly consistent. Here are the patterns worth knowing, what they usually mean, and what to do with each.

1. The flat plateau

A run of days at the same value, on one scale. Often depression at 2 for two weeks, or elevation at 1 for ten days.

What it usually means: The current state has stabilized at a non-baseline level. Not getting worse, not getting better. This is the pattern that often gets ignored ("it's not a crisis") even though it deserves a treatment review.

What to do: Note the start date. A sustained run at an off-baseline value is worth bringing up with your clinician — ask them, ahead of time, what duration would change their plan for you.

2. The slow drift

A gradual rise (or fall) on one scale across weeks. Today looks like yesterday; this month looks different from last month.

What it usually means: A real shift that hides because no single day stands out. Ambulatory data is well-suited to surfacing these slow patterns2013 precisely because it averages across many days.

What to do: Compare two-week windows. If the average has moved by a full step on the 0–3 scale, that is the moment to bring it up.

3. The sleep-mood lag

Sleep drops for a few nights. A few days later, mood shifts.

What it usually means: The classic prodrome pattern. Sleep is one of the most consistent leading indicators of a bipolar mood episode2008. The sleep change is the early warning; the mood change is the symptom.

What to do: Treat sleep stretches as their own signal. The mood does not need to have moved yet.

4. The mixed week

Both depression AND elevation at 2 or 3 in the same window. Irritability often the loudest of the four.

What it usually means: Possible mixed features. This is a higher-risk pattern — see the mixed bipolar episode primer.

What to do: Call your clinician. Mixed states have higher self-harm risk and deserve attention faster than either depression or elevation alone.

5. The cycle-locked pattern

Hard stretches that consistently land in the same window each month — often premenstrually, sometimes seasonally.

What it usually means: A cyclical contributor on top of, or alongside, your bipolar pattern. See PMDD and bipolar for the cycle-locked case.

What to do: Track cycle day or season alongside mood. After two or three full cycles, the pattern becomes obvious or it does not.

6. The anniversary spike

A predictable hard stretch at the same time each year — anniversary of a loss, a season, a holiday.

What it usually means: Real, often manageable with planning, frequently invisible without multi-year data.

What to do: Mark the dates in advance. Plan support, sleep regularity, and clinician check-ins around them.

7. The recovery curve

A drop in scores that holds for more than a couple of weeks. Sleep regularizing. Less variability.

What it usually means: A treatment, a life change, or a phase is working. Continuous logging captures recovery curves as clearly as it captures decline2013.

What to do: Notice it. Mention it at your next appointment. Recovery patterns are also useful data, not just decline patterns.

How to read your chart in practice

The discipline that helps most:

1. Skim the last four weeks first
2. Identify which of the patterns above (if any) shows up
3. Compare to your baseline
4. Decide if it is a "watch" week or a "call clinician" week

Five minutes once a week is enough.

A note on what this is

This is not a diagnostic guide. The patterns above are starting points, not conclusions. The point is to make your discussion with the person treating you specific, not to substitute for their judgment.