After a fight Mangus finds out that Alec is feeling very sick and Mangus worries that hes been poisoned by a demon, but it turns out Alec is suffering from a horrible illness and his life maybe at risk if he doesn't get proper care.
Alec stood where he was and looked annoyed. He had been arguing with Magnus on whether he was ok or not, as he looked very pale and was actually very ill.
"Look I am fine," He snapped.
He didn't want Magnus even worrying about him. He sat on the couch at Mangus's place and rubbed his eyes tired.