Influenza (Flu). The flu is an infectious disease that causes symptoms such as fever, cough, sore throat, headache, muscle aches, and chills.The annual flu vaccine can prevent most of the circulating influenza strains.Read about flu symptoms, and learn more about the flu shotÂ».nfluenza (Flu). The flu is an infectious disease that causes symptoms such as fever, cough, sore throat, headache, muscle aches, and chills.
Bipolar disorder, also known as manic-depressive illness, is a brain disorder that causes unusual shifts in mood, energy, activity levels, and the ability to carry out day-to-day tasks.Symptoms of bipolar disorder are severe.They are different from the normal ups and downs that everyone goes through from time to time. Bipolar disorder symptoms can result in damaged relationships, poor job or school performance, and even suicide.ymptoms of bipolar disorder are severe. They are different from the normal ups and downs that everyone goes through from time to time. Bipolar disorder symptoms can result in damaged relationships, poor job or school performance, and even suicide.
Why Many Don't Realize They Have Bipolar. Bipolar disorder and borderline personality disorder (BPD) are both mental illnesses that involve extreme mood swings. Since many BPD and bipolar symptoms overlap, these conditions are often mistaken for each other. But bipolar disorder and BPD are different illnesses, each with their own symptoms and treatments. How BPD Differs From Bipolar Disorder. Both bipolar disorder and BPD can interfere with relationships, work or school, and the ability to lead a productive life.