Physical depression.

[sverbot]

Physical depression is what happens when you are depressed. You don't feel like moving, you don't feel like getting anything done including bathing or eating. It can be brought on by incredibly irritating personal stress or PHYSICAL stress (actually it has been scientifically proven that psychic distress=physical distress).
I missed my PT appointment.
I missed my German test. I didn't even study.
I missed work.
I slept from 4am to 9pm.

I hate having to tell instructors about my problems, but unfortunately it occasionally interferes with my life.