It could just be a vitamin deficiency or a virus. Not everything is linked to mental illness. I think you should have a blood test and check for anemia or whatever the GP suggests. In the mean time, avoid junk food and alcohol, but drink enough water.

In any case, your personal hygiene should still be a priority. I really hope it's not a dark cloud heading your way, if so I'm sure you'll be fine. We don't always bounce back right away and that is why this place is a god send.

I'm not trying to downsize your urgency, just hoping you keep an open mind when dealing with situations not common with you.

Have a nice cuppa