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to be disordered; to be disarranged; to be disarrayed; to be disheveled; to be dishevelled
to be discomposed; to be upset; to get confused; to be disturbed
to lapse into chaos (due to war, etc.)
彼女は動揺して髪が乱れていることに気づかない。
She is so flustered she doesn't notice her hair is disheveled.
天候が乱れて航空便の遅延が相次いでいる。
The weather has become unstable and flight delays are occurring one after another.
生活リズムが乱れると体調を崩しやすくなる。
When your life rhythm is disrupted, you become prone to illness.