When you suffered the breakdown at work, if the doctor attributed it to work the first time you should have filed a worker's compensation claim. Additionally, if you were on authorized FMLA leave and returned within the 12 week allowed period, then were terminated for using the leave, this appears to be a violation of FMLA which mandates you be restored to your prior or a comparable position upon your return. You would need to file this complaint with the state commission on human/civil rights and/or the EEOC and upon their issuance of a right to sue letter, you can sue them.
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