Why don't you get off the couch?
What's your problem?
Why don't you cheer up then?
Are you suicidal? (No.)
Do you think you'll need to be hospitalized?
Maybe you're pregnant. (Mother, I hate to tell you in this forum but this statement is always inappropriate. Let's just assume I'll tell you if I am, but I wouldn't expect to hear it from me ever again.)
Things TO say to a person with Brain Fog:
Can I come take the baby for a couple of hours?
Can I make you guys some dinner?
How are you feeling today?
How can I pray for you?
You should eat some chocolate.