Anxiety can cause many neuro muscular symptoms--that are not seizures!
I know, because I've experienced a variety of muscle spasms, myoclonus, jerks etc---all due to stress!
Many "relaxation techniques" are effective -especially meditation-!
Stres...anxirty etc....can really upset the delicate biochemical imbalance in the brain & be the cause of a variety of symptoms mimicking other diseases--
So--YES---your anxiety, heartbreak, depression CAN cause many bodily symptoms--
Again--you should consider, meditation ,biofeedback, meditation, cognitive therapy---You'd be pleasantly surprised about how much better you'd feel-- Hope this helps--Regards-Robert