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.
There are several types of bipolar disorder; all involve episodes of depression and mania to a degree. Bipolar disorder is a lifelong illness. Episodes of mania and depression eventually can occur again if you don't get treatment.Many people sometimes continue to have symptoms, even after getting treatment for their bipolar disorder. Here are the types of bipolar disorder 1  : Bipolar I disorder involves periods of severe mood episodes from mania to depression.2  Bipolar II disorder is a milder form of mood elevation, involving milder episodes of hypomania that alternate with periods of severe depression.here are several types of bipolar disorder; all involve episodes of depression and mania to a degree. Bipolar disorder is a lifelong illness. Episodes of mania and depression eventually can occur again if you don't get treatment.