- Depression (Adult)
Depression is a painful sadness that interferes with daily life and includes hopelessness, anxiety, and more.
- Depression (Child and Adolescent)
Depression is a painful sadness that interferes with a child's schoolwork, family life, and social activities.
- Hyperthyroidism
Hyperparathyroidism can cause fatigue and weakness, increased thirst, impaired thinking, and bone fractures.
- Multiple sclerosis
Multiple sclerosis is a disease of the nervous system causing difficulties with balance, speech, and movement.
- Emphysema
Emphysema is a chronic lung condition that causes shortness of breath, a chronic cough, wheezing, and more.
- Mononucleosis
Mononucleosis is a viral infection causing extreme fatigue, sore throat, fever, rash, muscle aches, and more.
- Tuberculosis
Tuberculosis usually infects the lungs, causing a bad cough with blood, chest pain, fever, chills, and fatigue.
- Dehydration (Children)
Dehydration, or not getting enough fluid, causes dry and sticky mouth, tearless crying, and more in children.
- Thalassemia
Thalassemia is a rare group of genetic blood disorders effecting red blood cells and leading to anemia.
- Sleep deprivation
Sleep deprivation occurs when the lack of restful sleep is severe enough to compromise basic body functions.
- Anemia
Anemia, a lack of red blood cells, can cause fatigue, pale skin, weakness, dizziness, headache and more.
- Diabetes, type 1
Diabetes can make you feel hungry, tired, or thirsty; you may urinate more than normal and have blurry vision.
- Lung cancer (small cell)
Small cell lung cancer is the least common type of lung cancer and can cause a cough, chest pain, and more.
- Medication reaction or side-effect
Medication side effects include nausea, vomiting, stomach upset, weakness, dizziness, seizures, and more.
- Methamphetamine use
Methamphetamine use causes increased blood pressure, rapid heart rate, enlarged pupils, sweating, and more.
- Grief reaction
Grief reaction, the way someone copes with a loss, causes include anger, sadness, anxiety, guilt, and more.
- Dementia in head injury
Dementia resulting from a head injury may cause memory problems, difficulty speaking, and personality changes.
- Rectal cancer
Rectal cancer appears in the rectum and causes bloody stool and constipation.
- Chronic kidney disease
Chronic kidney disease is a condition of the kidneys that can cause high blood pressure, fatigue, and weakness.
- Malnutrition
Malnutrition occurs when the body isn't getting enough nutrients; sometimes the condition is life-threatening.
- Cystic fibrosis
Cystic fibrosis is an inherited disease that causes the body to produce abnormally thick and sticky mucus.
- Eating disorder
People with eating disorders have extreme and dangerous eating habits.
- Mumps
Mumps is a contagious viral disease that causes painful swelling of the glands that produce saliva.
- Hepatitis B
Hepatitis B is an inflammation of the liver that may cause fever, fatigue, dark urine, jaundice, and more.
- Hepatitis C
Hepatitis B is an inflammation of the liver that may cause yellowing of the skin and eyes, tiredness, and more.
- Radon exposure
Breathing in high levels of radon over time can cause lung cancer.
- Sarcoidosis
Sarcoidosis is a rare disease that can cause swelling and hard lumps in the lymph nodes and organs.
- Schizophrenia
Schizophrenia is a serious, chronic mental illness that causes delusional or hallucinogenic thoughts.
- Inflammatory bowel disease
Inflammatory bowel disease causes swelling and symptoms such as cramping, chronic diarrhea, and bleeding.
- Helicobacter pylori infection
Helicobacter, bacteria in the digestive tract, causes peptic ulcers and their associated pain and burning.
- Cocaine abuse
Cocaine abuse occurs when a person continues using it despite the social and health problems caused by it.
- Congestive heart failure
People with congestive heart failure can have shortness of breath, fatigue, irregular heartbeat and more.
- Constipation (child)
Constipation is having less than three bowel movements a week, causing hard stools, abdominal pain and more.
- Constipation (adult)
Constipation is having less than three bowel movements a week, causing hard stools, abdominal pain and more.
- Gastroenteritis
Gastroenteritis is inflammation of the stomach and intestine that causes diarrhea and vomiting.
- Teething
Teething can cause crankiness, fussing, biting on objects, swollen gums, and drooling in infants.
- Hay fever
Hay fever, an allergic reaction to outdoor pollens and molds, causes nasal congestion, itchy eyes, and more.
- Heart rhythm disorder
Some heart rhythm disorders can cause a fluttering in the chest, shortness of breath, chest pain or dizziness.
- Peptic ulcer
Peptic ulcers, sores in the lining of the stomach or upper intestine, cause abdominal pain, gas, and more.
- Diabetes, type 2
Diabetes can make you feel hungry, tired, or thirsty; you may urinate more than normal and have blurry vision.
- Acute sinusitis
Acute sinusitis, an inflammation of the sinuses, causes sinus pain and tenderness, facial redness and more.
- Viral syndrome
Viral syndrome is an unidentified cause of typical virus symptoms sore throat, stuffy nose, aches and more.
- Acute stress reaction
Acute stress reaction symptoms include shortness of breath, anxiety, nervousness, sense of doom and more.
- Excessive caffeine use
Excessive caffeine use can cause irritability, difficulty sleeping, anger, depression, and fatigue.
- Caffeine withdrawal
If you suddenly stop drinking caffeine, you get withdrawal symptoms, such as headache, fatigue, and bad mood.
- Sleep apnea
People with sleep apnea stop and restart breathing multiple times while sleeping.
- Lung cancer (non small cell)
Non-small cell lung cancer is the most common type of lung cancer and can cause a cough, chest pain, and more.
- Chronic sinusitis
Chronic sinusitis, or sinus infections, cause a stuffy or runny nose, tooth pain, fever, sore throat and more.
- Cirrhosis (liver)
Cirrhosis is a liver condition caused by chronic scarring; causing weakness, fatigue, and jaundice and more.
- Colon cancer
Colon cancer is often asymptomatic, but it can cause constipation, bowel obstruction, bloody stool and more.
- Crohn's disease
Crohn's disease is a digestive condition that causes swelling, cramping, diarrhea, and nutritional problems.
- Atrial fibrillation
Atrial fibrillation is a heart condition that causes heart palpitations, confusion, dizziness and more.
- Attention deficit hyperactivity disorder (ADHD)
Attention deficit hyperactivity disorder (ADHD) makes it hard to concentrate and focus.
- Bipolar disorder
Bipolar disorder causes extreme mood swings between depression and mania.
- Celiac disease
Celiac disease, which is an intestinal reaction to gluten, can cause gas, diarrhea, bloating, and weight loss.
- Esophageal cancer
Esophageal cancer starts in the lining of the esophagus and can cause difficulty swallowing.
- Glomerulonephritis
Glomerulonephritis is a type of kidney disease and causes swelling, abnormal urine, fever, achiness, and more.
- Pulmonary hypertension
Pulmonary hypertension can cause shortness of breath, a fast heart rate, or lightheadedness.
- Rheumatoid arthritis
Rheumatoid arthritis is an autoimmune disease that causes pain, swelling, and joint damage.
- Pre-leukemia (myelodysplastic syndrome)
Myelodysplastic syndromes are diseases that affect the bone marrow and blood, causing anemia and tiredness.
- Ulcerative colitis
Ulcerative colitis causes swelling in the large intestine and can lead to cramping, diarrhea, and more.
- Heat exhaustion
Heat exhaustion causes intense thirst, heavy sweating, pale, cool, and moist skin, muscle cramps, and more.
- Hepatitis A
Hepatitis A is an inflammation of the liver. Symptoms include fever, fatigue, yellowing of the skin, and more.
- Interstitial lung disease
Interstitial lung disease is a group of lung disorders that cause shortness of breath, a dry cough, and more.
- Low blood pressure (hypotension)
Low blood pressure, or hypotension, can make you feel lightheaded and dizzy
- Lyme disease
Lyme disease is a bacterial infection spread through tick bites; symptoms include rash, fever chills, and more.
- Low blood sugar (hypoglycemia)
Low blood sugar, or low glucose levels, causes shakiness, anxiety, clammy skin, irritability, hunger, and more.
- Scleroderma
Scleroderma is an uncommon immune disorder that causes collagen to build up in the tissue, making it harden.
- Supraventricular tachycardia
Supraventricular tachycardia is fast heart rhythm starting in one of the upper chambers of the heart.
- Thyroid storm
A thyroid storm, dangerously high levels of thyroid hormone, causes fever, racing heartbeat, sweating, and more
- Ventricular septal defect
A ventricular septal defect is a hole in the heart that some babies are born with
- Vitamin B12 deficiency
Vitamin B12 deficiency symptoms include fatigue, pale skin, weakness, sleepiness, numbness, weakness, and more.
- Anemia, chronic disease
Anemia of chronic disease (ACD) can cause fatigue, pale skin, weakness, dizziness, headache and more.
- Gastrointestinal bleeding
The symptoms of gastrointestinal bleeding include black or bloody stool or vomit, dizziness, and cramping.
- Giardiasis
Giardiasis is an infection of the small intestine causing diarrhea, gas, bloating, nausea and stomach cramps.
- Chronic fatigue syndrome (CFIDS)
Chronic fatigue syndrome is a condition that causes extreme tiredness that doesn't get better with rest.
- Iron poisoning
Iron poisoning causes abdominal pain, vomiting, diarrhea, lethargy, and dehydration.
- Diabetic ketoacidosis
Symptoms of diabetic ketoacidosis include dry mouth, excessive thirst and urination, and more.
- Tetralogy of Fallot
Tetralogy of Fallot is a combination of heart defects causing bluish skin, trouble breathing, and more.
- Cocaine withdrawal
Cocaine withdrawal may cause feelings ranging from anxiety, irritability and sleepiness to suicidal thoughts.
- Aortic regurgitation
Aortic regurgitation, when the aortic valve doesn't close completely, can cause severe heart symptoms.
- Pleural effusion
Pleural effusion is buildup of fluid in the pleura and can cause difficulty breathing or chest pain.
- Intestinal Ileus
Intestinal ileus is a condition of the intestinal muscles causing cramps and bloating, vomiting, gas, and more.
- Myasthenia gravis
Myasthenia gravis is caused by abnormal immune responses that weaken muscles, particularly of the face.
- Dehydration (Adult)
Dehydration, or not getting enough fluid, causes low blood pressure, weakness, dizziness, fatigue, and nausea.
- Histoplasmosis
Histoplasmosis is a fungal infection of the lungs causing muscle aches, fever, chest pain, cough, and more.
- Anemia, iron deficiency
Anemia , a lack of red blood cells, can cause fatigue, pale skin and gums, brittle nails, irritability, and more.
- Alzheimer's disease
Alzheimer's disease is type of dementia that causes memory loss, as well as thinking and behavior problems.
- Anorexia nervosa
Anorexia is an eating disorder associated with low bodyweight developed to cope with emotional problems.
- Bulimia
Bulimia is an eating disorder that involves binging on large quantities of food then purging it by vomiting.
- Carbon monoxide poisoning
Carbon monoxide poisoning can be fatal, symptoms include headache, dizziness, nausea, and vomiting.
- ALS dementia
Amyotrophic lateral sclerosis causes personality changes, difficulty reasoning, and weakness.
- Restless legs syndrome
Restless leg syndrome causes intense discomfort in your legs and an overpowering urge to move them.
- Pancreatic cancer
Pancreatic cancer is typically asymptomatic until the cancer has advanced, making treatment difficult.
- Hypothyroidism (adult)
Hypothyroidism your body functions slow down, making you gain weight and feel tired all the time.
- Exercise or physical activity
Exercise is vital for good health, but overdoing it can lead to muscle aches, dehydration, headache, and more.
- Underweight
Being underweight means weighing less than you need for good health.
- Hyperparathyroidism
Hyperthyroidism causes weight loss, shakiness, tiredness, sensitivity to heat, insomnia, and more.
- Acute kidney failure
Acute kidney failure is sudden and can cause swelling, frequent dark urination, fatigue, nausea and more.
- Renal cell (kidney) cancer
Renal cell cancer is a type of kidney cancer that can cause bloody urine and persistent pain in the side.
- Aortic aneurysm (abdomen)
An abdominal aortic aneurysm is swelling of the main abdominal artery and can cause sudden chest pain.
- Small intestine cancer
Small intestine cancer is rare and often has no symptoms, but can cause symptoms in its advanced stages.
- Mesenteric lymphadenitis
Mesenteric lymphadenitis is an inflammation of abdominal lymph nodes causing pain, diarrhea, fever, and more.
- Typhoid fever
Typhoid fever is a life-threatening illness and causes fever, general aches and pains, headache, and weakness.
- Hypopituitarism
Hypopituitarism is a rare disorder of the pituitary glands, which can cause many different symptoms.
- Cat-scratch disease
Cat scratch disease is a bacterial infection caused by a cat scratch or bite.
- Lead poisoning
Lead poisoning causes sudden pain on either side of the lower back, urinary issues, nausea, fever, and chills.
- Anemia, hemolytic
Hemolytic anemia occurs when there aren't enough red blood cells in the blood.
- Radiation sickness
Radiation sickness is caused by a high dose of radiation, and causes vomiting, diarrhea, hair loss, and more.
- Throat cancer
Throat cancer can cause symptoms including difficulty swallowing, hoarseness, and chronic cough.
- Hypothyroidism (infant and child)
Hypothyroidism in children can cause delayed growth, weight gain, a puffy face, a large tongue, and more.
- Pseudohypoparathyroidism
Pseudohypoparathyroidism is a rare inherited condition that can lead to cramps, muscle spasms, and more.
- Endocarditis
Signs of endocarditis, an infection of the heart, include swelling, rash, sinus congestion, nausea, and more.
- Bird (avian) flu
Bird flu is spread to people from birds and causes fever, cough, sore throat and muscle aches.
- Stomach cancer
Early stomach cancer may cause commonly misdiagnosed symptoms such as indigestion, nausea, and poor appetite.
