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Headache    
Fatigue    
Loss of appetite    
Nausea

13 possible causes of "Headache, Fatigue, Loss of ap..."
Symptoms:
  • Moist skin
  • Headache
  • Fatigue
  • Loss of appetite
  • Nausea
  • High-pitched breath sounds
1. Cold and Flu Overview
Overview Colds (common colds) and the flu (influenza) are contagious infections that affect the respiratory system. Both are airborne illnesses, spread through coughing and sneezing. Colds typically are confined to th...
Symptoms:
  • Loss of appetite
  • Headache
  • Fatigue
  • Nausea
  • Vomiting
  • Tired
2. 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...
Symptoms:
  • Loss of appetite
  • Headache
  • Fatigue
  • Nausea
  • Hard to awaken
  • Hallucinations
3. 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:
  • Loss of appetite
  • Headache
  • Fatigue
  • Nausea
  • Self-depreciation
  • Cold sore
4. 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...
Symptoms:
  • Seizures
  • Headache
  • Fatigue
  • Loss of appetite
  • Nausea
  • Difficulty in swallowing
5. 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:
  • Loss of appetite
  • Headache
  • Fatigue
  • Nausea
  • Delirium
  • Bad breath
6. Chronic Kidney Disease
Chronic kidney disease (CKD) causes destruction of the kidneys. It is progressive and irreversible.Your kidneys are an essential part of your body. They have a number of functions: help maintain the balance of mineral...
Symptoms:
  • Loss of appetite
  • Headache
  • Fatigue
  • Nausea
  • Low blood pressure
  • Difficulty breathing when lying down
7. Diabetic Ketoacidosis
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...
This condition is considered a medical emergency. Urgent care may be required.
Symptoms:
  • Loss of appetite
  • Headache
  • Fatigue
  • Nausea
  • Body ache
  • Dark urine
8. Hepatitis A
Hepatitis is an inflammation of the liver caused by exposure to toxins, immune diseases, or infection. Viruses cause most cases of hepatitis. Hepatitis A is inflammation of the liver caused by the hepatitis A virus...
Symptoms:
  • Nausea
  • Headache
  • Fatigue
  • Loss of appetite
  • Fast heart rate
  • Loss of consciousness
9. Addisonian Crisis (Acute Adrenal Crisis)
When we're stressed out, our adrenal glands produce a hormone called cortisol. Cortisol helps our bodies respond effectively to stress. It also plays a role in bone health, immune response, and the metabolism of food...
This condition is considered a medical emergency. Urgent care may be required.
Symptoms:
  • Eye pain
  • Headache
  • Fatigue
  • Loss of appetite
  • Nausea
  • Joint pain
10. West Nile Virus Infection (West Nile Fever)
A mosquito bite can turn into something much more severe if you are infected with West Nile virus. Mosquitoes transmit this virus after they bite an infected bird and then bite a person. While not all people wit...

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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