Flu

Flu, also called influenza, is a viral infection of the upper airways. It is usually more severe than the common cold, although it may appear like the common cold in the early stages. Typical symptoms include some or all of ... More »

Misdiagnosis: Flu

Undiagnosed flu: Influenza is often undiagnosed, because it is misdiagnosed by the patient as something milder, such as the common cold ... More Misdiagnosis »

Related Articles

• Viral Infections: Viral infections are caused by viruses, which are tiny microbes that spread in the body. Viruses are actually made up ... More on Viral Infections  »
• Common Cold: The common cold refers to any number of viral infections of the nose and throat. Typical symptoms are all too ... More on Common Cold  »
• Middle Ear Infection: A middle ear infection, also called “otitis media”, is an infection of the middle ear. It is a common complication ... More on Middle Ear Infection  »
• Bronchitis: Bronchitis is the inflammation of the airways leading to the lungs, called the “bronchi”. The term “bronchitis” is usually used ... More on Bronchitis  »
• Pneumonia: Pneumonia refers to lung inflammation, and often to a lung infection with fluid in the lungs. Pneumonia can be very ... More on Pneumonia  »
• Croup: Croup is an inflammation of the airways, usually caused by a viral infection. The hallmark symptom of croup is a ... More on Croup  »
• Whooping Cough: Whooping cough, also called Pertussis, is a respiratory infection that is well-known for its characteristic cough. Whooping cough is ... More on Whooping Cough  »
• Allergic Rhinitis: Allergic rhinitis refers to rhinitis (runny nose) that is caused by allergies. Hay fever is a seasonal type of allergic ... More on Allergic Rhinitis  »
• Bronchiolitis: Bronchiolitis is an inflammation or infection of the bronchioles (airways in the lungs) that can be very serious. It is ... More on Bronchiolitis  »
• Pharyngitis: Pharyngitis is a throat inflammation, typically causing a sore throat. It is often related to Tonsillitis. The cause of pharyngitis ... More on Pharyngitis  »

Related Symptom Topics

Read more about these related symptoms:

• Cold
  
     - Overview
• Cough
  
     - Overview
  | Causes
  | Types
  | Similar Symptoms
  | Drugs
  | Misdiagnosis
• Sneezing
  
     - Overview
  | Causes
• Muscle pain

... More Symptoms »

Related Disease and Condition Topics

Read about these diseases and medical conditions related to Flu:

• Viral Infections
  
     - Overview
  | Drugs
• Common Cold
  
     - Overview
  | Drugs
  | Misdiagnosis
• Middle Ear Infection
  
     - Overview
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... More Diseases »

Note: This site is for informational purposes only and is not medical advice. See your doctor or other qualified medical professional for all your medical needs.