A person may have mood disorder if his or her overall emotional states are incompatible with the situation that interferes their productivity and life for a prolonged period of time. They may experience high emotional distress when encounter with unexpected circumstances. Apart from negative thoughts and emotions, they may experience physical symptoms such as stomach issues, body aches, appetite and sleep changes. Interaction with people may change, too, such as increasing impatient with other people or having difficulties to effectively manage day to day issues.