|clinical depression||Just cheer up!|
|food allergies||Come on, just try some!|
|anorexia nervosa||You really need to eat more.|
|chronic fatigue||Hey, wake up!|
|insomnia||Just go to sleep.|
|addiction||Why don't you just quit?|
|panic attack||You really should calm down.|
|Generalized Anxiety Disorder||Stop being a worrywart.|
|dyslexia/dyscalculic/dysgraphic||Just try harder!|
|dyspraxia||Pay a bit more attention to what you're doing!|
|Post-Traumatic Stress Disorder||Get over it.[*]|
|phobias (in general)||Quit being afraid and just go do it.|
|migraines||It's all in your head.|
|multiple personalities||Line up all your personalities, pick one, and stick with it.|
Or: Quit showing off and pretending to be more than one person.
[*] Long version, "So you were molested/raped/abused/whatever when you were a kid. You're an adult now. Get over it."