It’s a big chunk, but not in the simplistic “bipolar is just people who care too much what others think” way that pop psych TikTok keeps peddling. You’re dealing with a brain whose affective gain knob is set way higher than average. Social signals aren’t whispers—they’re foghorns.

Here’s the version that doesn’t sugarcoat anything:

1.

Emotion amplification is the core issue, and social cues are the strongest inputs.

Humans evolved to treat social acceptance or exclusion as life-or-death signals. In bipolar, the circuits that regulate emotional intensity and reward/punishment expectancy run hotter. So social feedback hits harder than it should.

When someone smiles? It’s gasoline on a good mood.

When someone pulls away? It’s a meteor strike.

2.

Reward circuitry is hypersensitive.

Bipolar is partly a disorder of dopaminergic volatility. Validation, praise, admiration—these trigger reward spikes that can kick off hypomania.