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Fatigue    
Headache    

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74 possible causes of "Fatigue, Headache"
Symptoms:
  • No urine output
  • Abnormal urine odor
  • Headache
  • Fatigue
  • Chapped lips
  • Coma
11. Dehydration
Dehydration occurs when your body loses more fluid than you drink. When the body loses too much water, organs, cells, and tissues fail to function. Dehydration can also cause shock. Severe dehydration must be treate...
This condition is considered a medical emergency. Urgent care may be required.
Symptoms:
  • Dry hair
  • Abnormal heart rhythms
  • Heart rate altered
  • Fatigue
  • Headache
  • Aversion to food or drink
12. Anorexia Nervosa
Almost everyone worries about gaining too much weight. But in some people the worry becomes obsessive, causing a condition called anorexia nervosa. Anorexia nervosa is an eating disorder that can result in severe weigh...
Symptoms:
  • Bad breath
  • Headache
  • Pain
  • Fatigue
  • Sore throat
  • Snoring
13. Sinus Infections (Sinusitis)
A sinus infection, or sinusitis, is a common condition that affects 31 million people in the United States each year. The infection occurs when your sinuses and nasal passages become inflamed. The sinuses are small ai...
Symptoms:
  • Fatigue
  • Nausea
  • General weakness
  • Headache
  • Muscle rigidity
  • Muscle weakness
14. Low Blood Sodium (Hyponatremia)
Low blood sodium is also known as hyponatremia . Sodium is an electrolyte. It helps maintain the balance of water in and around your cells. Sodium is important for proper muscle and nerve function. It also keeps you...
Symptoms:
  • Anemia
  • Headache
  • Dark urine
  • Fatigue
  • Rectal hemorrhage
  • Blood in stool
15. Malaria
Malaria is a life-threatening disease. It is typically transmitted through the bite of an infected Anopheles mosquito. Infected mosquitoes carry the Plasmodium parasite. When this mosquito bites you, the parasite i...
Symptoms:
  • Low back pain
  • Anxiety
  • Sleeplessness
  • Fatigue
  • Headache
  • Paresthesia
16. 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...
Symptoms:
  • Short stature
  • Obesity
  • Hoarseness
  • Fatigue
  • Headache
  • Dysfunctional uterine bleeding
17. Hypothyroidism
The thyroid gland is an important endocrine gland that controls the body's metabolism. It is a small butterfly-shaped gland located in the front of the neck just below the Adam's apple. The thyroid gland produces th...
Symptoms:
  • Seizures
  • Difficulty in swallowing
  • Groin lump
  • Fatigue
  • Headache
  • Neck lump
18. Infectious Mononucleosis
Infectious mononucleosis, often called "mono," is caused by the Epstein-Barr virus (EBV). It typically occurs in teenagers, but you can get it at any age. The virus is spread through saliva, which is why some peopl...
Symptoms:
  • Strawberry tongue
  • Headache
  • Irritable mood
  • Fatigue
  • Frontal headache
  • Lightheadedness
19. Iron Deficiency Anemia
Anemia occurs when a person has lower-than-normal levels of red blood cells (RBCs) in the blood. According to the American Society of Hematology, there are many factors that can contribute to lower-than-normal RB...
Symptoms:
  • Loss of appetite
  • Tired
  • Rapid shallow breathing
  • Fatigue
  • Headache
  • General weakness
20. Pneumonia
Pneumonia is an infection in one or both lungs. The infection may be caused by fungi, bacteria, or viruses. Pneumonia causes inflammation in your lung's air sacs, also referred to as alveoli. The alveoli fill with flui...

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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