1 The word gun is a noun, but can be used as a verb when you âgun someone down.â Verbing a noun can add spice and drama to an otherwise bland sentence. 2  Experiment with nouns to find one that works well with the verbing process.
As another poster mentioned, depression is a cause of laziness. But let's not forget procrastination. While not officially recognized as a mental disorder, in some people procrastination is both a cause and effect of laziness. Certian people cannot prioritize correctly, to the point I've read many cases where a person will simply always make their priorities come second, mentally speaking.
The exact causes of migraines are unknown, although they are related to changes in the brain as well as to genetic causes. People with migraines may inherit the tendency to be affected by certain migraine triggers, such as fatigue, bright lights, weather changes and others.