Headache, Shortness of breath, Tired: 21 Possible Causes
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What causes headache, shortness of breath and tired? 21 possible conditions

See a list of possible causes in order from the most common to the least.

1

Anxiety

What is anxiety? Anxiety often manifests itself as an apprehension about daily life. Learn the basics with this overview of the types of anxiety disorders.

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2

Cold and Flu Overview

Common colds and influenza are contagious infections that affect the respiratory system. Both are airborne illnesses, spread through coughing and sneezing. Shared symptoms include headache, cough, sore throat, and more.

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3

Generalized Anxiety Disorder

People who suffer from generalized anxiety disorder, or GAD, worry uncontrollably about common occurrences and situations. The condition may also be called chronic anxiety neurosis.GAD is different than normal feeling...

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4

Pneumonia

Pneumonia is an infection of the lungs caused by fungi, bacteria, or viruses. General symptoms include chest pain, fever, cough, and difficulty breathing.

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5

Swine Flu

Swine flu, or H1N1, is highly contagious and can spread quickly from person to person. A simple sneeze may cause thousands of germs to spread through the air. Symptoms are similar to regular influenza.

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6

High Blood Pressure Overview

High blood pressure (hypertension) increases your risk for heart attack, stroke, coronary heart disease, and other serious health problems.

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7

Infectious Mononucleosis

Infectious mononucleosis, or mono, refers to a group of symptoms usually caused by the Epstein-Barr virus (EBV).

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8

Iron Deficiency Anemia

Iron-deficiency anemia is the most common type of anemia, which occurs when the body does not have enough of the mineral iron. The body needs iron to produce hemoglobin.

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9

Chronic Bronchitis

People often develop acute bronchitis after a viral chest infection. Blue-colored lips ankle or foot swelling can result.

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10

Polycythemia Vera

Polycythemia vera (PV) is a bone marrow disorder in which the body produces an excessive amount of red blood cells. Red blood cells are responsible for carrying oxygen to all parts of the body. Blood is carrie...

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11

Diabetic Ketoacidosis

This condition is considered a medical emergency. Urgent care may be required.

Diabetic ketoacidosis (DKA) is a serious complication that stems from diabetes. If you don't have enough insulin to help your body process sugars (glucose), your body will start burning fat to fuel itself. As a result...

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12

End-Stage Kidney Disease

In end-stage kidney disease, also known as end-stage renal disease (ESRD), the kidneys are functioning below 10 percent of their normal function.

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13

Tuberculosis

Tuberculosis (TB) is a highly infectious disease that primarily affects the lungs. A severe and long-lasting cough, fever, and night sweats could indicate an active TB infection.

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14

Sarcoidosis

Learn about sarcoidosis and its causes, symptoms, diagnosis, treatment, and potential complications.

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15

Hypovolemic Shock

This condition is considered a medical emergency. Urgent care may be required.

Hypovolemic shock (hemorrhagic shock) is a life-threatening condition that results when you lose more than 20 percent of your body's blood or fluid supply, preventing the heart from pumping sufficient blood to your body.

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16

Parrot Fever (Psittacosis)

Parrot fever, also called parrot disease and psittacosis, is very rare. According to the Centers for Disease Control and Prevention, there have been fewer than 50 confirmed cases per year in the United States sinc...

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17

Acute Mountain Sickness

Acute mountain sickness, or altitude sickness, is a condition that occurs when your body can't adjust to a high level of altitude.

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18

Legionnaires' Disease

Legionnaires' disease is a severe type of pneumonia, or lung infection. Learn about its symptoms, causes, treatment, and prevention.

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19

What You Need to Know About Paroxysmal Nocturnal Hemoglobinuria

Paroxysmal nocturnal hemoglobinuria (PNH) is a rare disorder that causes red blood cells to break down sooner than they should.

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20

Absence of Gamma Globulin in Blood

Agammaglobulinemia is an inherited immune system disorder in which the body is unable to produce antibodies.

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This feature is for informational purposes only and should not be used to diagnose.
Please consult a healthcare professional if you have health concerns.
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