Worried a co-worker is sick?

I know this is none of my business and I'm an MD resident but not in neurology. I'm worried about a co-worker and I'm not sure if she's properly taking care of herself. She keeps telling me she got worked up and it's nothing to worry about, but she looks pretty bad when she decompensates. She has these periods of ataxia, hallucinates, and gets profoundly confused (e.g. she forgot her address). She got hospitalized once and thought the nurse call button was a phone. These periods seem to last...

Worried a co-worker is sick?