nervous breakdown 
noun
A period of mental illness resulting from severe depression, stress, or anxiety: Joe nearly had a nervous breakdown...
- Mind related diseases like anxiety, depression, nervous breakdowns and sleeplessness are on the rise.
- At its most extreme, a prolonged period of bullying can lead to nervous breakdowns, depressive illness and, ultimately, suicide.
- Stress call lead to illnesses like high blood pressure, heart disease, ulcers, migraines and mental-health, problems like nervous breakdowns and violent outbursts.
Synonyms
mental collapse, breakdown, collapse, nervous collapse, nervous exhaustion, nervous tension, period of mental illness, crisis, personal crisis, psychological trauma
informal crack-up
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