My husband has dual personality but when he is in anger he can raise his voice and scold servant or wife. His talking tone is not liked by anyone as everyone has his own dignity and they leave the job. He is very finicky about food and chappati. If not well annoys, besides he already had heart bypass as he shows lots of stress.
What does Islam say about it?

Absolute abuse on his part and he must seek counselling to stop. It’s not allowed to behave in such a way whatsoever.