What causes fatigue and irritable mood? 31 possible conditions

Viewing 1 - 20 of 31 results

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

1

CFS (Chronic Fatigue Syndrome)

Chronic fatigue syndrome (CFS) is a debilitating disorder characterized by intense fatigue that cannot be cured with sleep. Mental and physical activities may cause symptoms to worsen. When fatigue cannot be linked to ...

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2

AIDS

HIV causes progressive failure of the immune system, making the body far more susceptible to infections and cancer.

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3

Low Blood Sugar (Hypoglycemia)

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

Also known as hypoglycemia, low blood sugar can be a dangerous condition. Hypoglycemia is rare in people who are not suffering from diabetes, the chronic disease that affects the body's ability to regulate blood sugar...

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4

Bipolar Disorder

Bipolar disorder mental illness marked by extreme from mania to depression. Bipolar disorder is also called bipolar disease or manic depression.

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5

Low Blood Sodium (Hyponatremia)

Low blood sodium, or hyponatremia, occurs when water and sodium are out of balance in your body. A quick drop in sodium levels can cause weakness, headache, nausea, and muscle cramps.

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6

Sleeplessness

Sleeplessness, or insomnia, is a serious sleep disorder. It can mean the inability to fall asleep or stay asleep throughout the night, or the tendency to wake too early before having gotten enough sleep.

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7

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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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, which carries oxygen to the body's tissues...

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9

Sinus Infections (Sinusitis)

A sinus infection causes the sinuses and nasal passages to become inflamed. Facial swelling is a common sign of this type of infection.

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10

Diabetes Overview

Diabetes is a group of chronic metabolic diseases caused by defects in insulin production or function. Advanced diabetes may cause stomach pain, nausea, dizziness, and cramps.

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11

PMS (Premenstrual Syndrome)

Premenstrual syndrome (PMS) is a condition that affects a woman's emotions, physical health, and behavior during certain days of the month generally just before her menstrual period. PMS symptoms start five to 11 day...

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12

Meningococcemia

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

Meningococcemia is a bacterial infection caused by the Neisseria meningitides bacteria. This is the same type of bacteria that causes some types of meningitis. When the bacteria infect the membranes (meninges) tha...

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13

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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14

Tension Headaches

A tension headache is the most common type of headache. This type of headache can cause mild or moderate pain in the head, neck, and behind the eyes. Some patients say that a tension headache feels like a tight ban...

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15

Concussion

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

A concussion is a mild traumatic brain injury. It can occur after an impact to your head or after a whiplash-type injury that causes your head and brain to shake quickly back and forth. Concussions are usually not lif...

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16

Cocaine and related disorders

Cocaine is extracted from the coca plant, which grows in Central and South America. It is processed into many forms for use as an illegal drug of abuse.

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17

Graves' Disease

Graves' disease is an autoimmune disorder. It causes hyperthyroidism, which occurs if the thyroid gland creates too much thyroid hormone in the body. Graves' disease is one of the most common forms of hyperthyroidism.I...

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18

Whiplash

Whiplash occurs when a person's neck is whipped backward and then forward very suddenly. This injury is most common following a rear-end car collision. It can also result from physical abuse, sports injuries, o...

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19

Migraine with Aura

Migraine is a disorder characterized by repeated attacks of severe headache. A migraine headache causes throbbing or pulsating pain, usually on only one side of the head. These headaches are often associated wit...

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20

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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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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