Here are a few links to websites that describe conditions of mental illness and their symptoms: 

The purpose of this page is to offer resources for general information only, and is not intended to offer diagnoses or advice, or to take the place of a medical doctor or licensed mental health professional.

http://www.mhasp.org/help/symptoms.html

http://www.mayoclinic.com/health/mental-health/MH00042

http://psychcentral.com/disorders/

http://www.healthyplace.com/other-info/psychiatric-disorder-definitions/adult-symptoms-of-mental-health-disorders/menu-id-71/