Fever, Irritable mood: 21 Possible Causes
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What causes fever and irritable mood? 21 possible conditions

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

1

Middle Ear Infection

A middle ear infection (otitis media), occurs when a virus or bacteria causes the area behind the eardrum to become inflamed. It is most common in children.

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2

Sinus Infections (Sinusitis)

A sinus infection, or sinusitis, is a condition that occurs when your nasal passages become infected and inflamed.

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3

Meningococcemia

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

Meningococcemia is a bacterial infection that can lead to meningitis. Learn more about the symptoms.

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4

Meningitis

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

Meningitis can affect you differently depending on your age. Learn more about the symptoms and risk factors for each age group.

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5

CFS (Chronic Fatigue Syndrome)

Chronic fatigue syndrome (CFS) is a debilitating disorder characterized by extreme tiredness that can't be explained by an underlying medical condition.

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6

Post Traumatic Stress Disorder (PTSD)

PTSD can affect anyone who has undergone a traumatic event. Read more on how to cope with it.

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7

Septicemia

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

Septicemia is bacterial infection spread through the entire vascular system of the body. If untreated it can result in sepsis, a life-threatening inflammation.

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8

Teething Syndrome

Teething syndrome-or simply "teething"-is a normal process that infants go through as their teeth break, or cut, through their gums. Babies normally start teething when they are six months old. By the time a child i...

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9

Intussusception

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

Most common in boys, intussusception occurs when a portion of the intestines become enfolded, causing a blockage. Symptoms include abdominal pain, vomiting, bloody stools, and others. It is potentially life-threatening.

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10

Encephalitis

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

Encephalitis is an inflammation of the brain tissue. It's most often caused by viral infections. In some cases, bacterial infections can cause encephalitis.

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11

Hernia

A hernia occurs when an organ pushes through an opening in the muscle or tissue that holds it in place. For example, the intestines may break through a weakened area in the abdominal wall. Hernias are most common in th...

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12

Alcohol Withdrawal Delirium

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

Alcohol withdrawal delirium (AWD) is the most serious form of alcohol withdrawal. It causes sudden and severe problems in your brain and nervous system. Approximately five percent of hospital patients being treated fo...

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13

Alcohol Withdrawal Syndrome

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

Alcohol withdrawal syndrome (AWS) is the name for the symptoms that occur when a heavy drinker suddenly stops or significantly reduces their alcohol intake. With AWS, you may feel mild anxiety and fatigue. You may als...

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14

Infectious (Septic) Arthritis

Infectious arthritis occurs when an infection, caused by a bacteria or virus, spreads to a joint or the fluid surrounding the joint (synovial fluid).

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15

Herpes Stomatitis

Recurrent herpes simplex labialis, also known as oral or orolabial herpes, is an infection of the mouth area caused by the herpes simplex virus. It is a common and contagious infection that spreads easily.

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16

Inguinal Hernia

An inguinal hernia occurs in the groin area when fatty or intestinal tissues push through the inguinal canal. The inguinal canal is located at the base of the abdomen.

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17

Polio

Poliomyelitis, or polio, is a highly contagious disease that is caused by a virus that attacks the body's nervous system. It is most likely to be contracted by children under five years old.

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18

Tetanus

Tetanus, also called Lockjaw, is a serious bacterial infection that affects the nervous system and causes muscles throughout the body to tighten.

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19

Adrenergic Bronchodilators Overdose

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

An adrenergic bronchodilators overdose is when you take too much of a certain kind of asthma medication.

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20

Hemolytic Uremic Syndrome

Hemolytic uremic syndrome (HUS) occurs when an immune reaction causes low red blood cell levels, low platelet levels, and kidney injury.

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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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