It’s not really simple to try to discern the difference between what the expected behaviors are and what the signs of a mental disorder might be. There is no simple evaluation that will let people know whether there is a mental disorder or what behavior and feelings might be typical behavior of a person or the result of a physical condition.

Here’s what you should watch out for: 

• Excessive fear or worry
• Feeling unnecessarily upset or low
• Confused thought or difficulties with paying attention and learning
• Extreme mood swings, like uncontrollable “highs” or euphoric experiences
• Extended or powerful feelings of irritability or rage
• Abstaining from having a social life
• Difficulties in understanding or communicating with other people
• Sleeping habit changes or experiencing exhaustion and low energy
• Shifts in eating habits, like increased hunger or loss of appetite
• Changes in the sex drive
• Suicidal thoughts 
• Inability to carry out everyday tasks or to cope with daily challenges and pressures