anxiety
"I was in the process of discontinuing a SSRI antidepressant and struggling with out-of-nowhere bouts of intense anxiety. I could literally sit at my desk, read something relaxing and then I would suddenly feel my heart racing, stomach cramping, hands becoming very cold but sweaty at the same time - for no reason. Then obviously my mind picked up on that, anxious racing thoughts appeared, I was getting some chest pains too. After an attack like that it was really hard to calm down, so then I couldn't fall asleep. 10mg propranolol in the morning was enough to stop these attacks from occurring and somehow without those nasty physical symptoms my anxiety levels were much lower, so I was able to carry on working/socializing without any problems."