- Irritable bowel syndrome
Irritable bowel syndrome is a common condition that causes painful spasms and cramping in the large intestine.
- Gastroenteritis
Gastroenteritis is inflammation of the stomach and intestine that causes diarrhea and vomiting.
- Medication reaction or side-effect
Medication side effects include nausea, vomiting, stomach upset, weakness, dizziness, seizures, and more.
- Food poisoning
Food poisoning can cause abdominal pain, diarrhea, nausea, vomiting, fever, chills, and weakness.
- Traveler's diarrhea
Traveler's diarrhea causes watery diarrhea and cramps, sometimes with a low-grade fever.
- Drug overdose
A drug overdose can be fatal and causes sleepiness, confusion, coma, vomiting, and other symptoms.
- Viral gastroenteritis
Gastroenteritis (stomach flu) is a viral condition that causes diarrhea and vomiting.
- Hyperthyroidism
Hyperparathyroidism can cause fatigue and weakness, increased thirst, impaired thinking, and bone fractures.
- Low blood sugar (hypoglycemia)
Low blood sugar, or low glucose levels, causes shakiness, anxiety, clammy skin, irritability, hunger, and more.
- Aspirin poisoning
Aspirin poisoning is a medical emergency and can cause nausea, vomiting, drowsiness and more.
- Colon cancer
Colon cancer is often asymptomatic, but it can cause constipation, bowel obstruction, bloody stool and more.
- Campylobacter
Campylobacter is an intestinal infection causing abdominal pain and cramping, nausea, diarrhea, and vomiting.
- Depression (Adult)
Depression is a painful sadness that interferes with daily life and includes hopelessness, anxiety, and more.
- Alcohol withdrawal (delirium tremens)
Alcohol withdrawal causes anxiety, depression, headaches, nightmares, fatigue, sweating, and shakiness.
- Postconcussive syndrome
Postconcussive syndrome occurs when the symptoms of a concussion or other brain injury continue to occur.
- Sleep deprivation
Sleep deprivation occurs when the lack of restful sleep is severe enough to compromise basic body functions.
- Generalized anxiety disorder
Generalized anxiety disorder is a condition in which a person has nearly constant anxiety.
- Antibiotic use
Antibiotics can cause stomach pain, diarrhea, nausea, vomiting, itching, rashes and dizziness.
- Dietary changes
Symptoms of dietary changes vary depending on the problem, they include constipation, diarrhea, and more.
- Sleep apnea
People with sleep apnea stop and restart breathing multiple times while sleeping.
- Heat stroke (hyperthermia)
Heat stroke is caused by hot weather and results in dizziness, nausea, vomiting, confusion, and a headache.
- Lactose intolerance
Lactose intolerance, or the inability to digest lactose, leads to gas, bloating, and other symptoms.
- Inflammatory bowel disease
Inflammatory bowel disease causes swelling and symptoms such as cramping, chronic diarrhea, and bleeding.
- Insulin reaction (hypoglycemia)
An insulin reaction is the result of low blood sugar and causes anxiety, hunger, shaking, dizziness, and more.
- Iron poisoning
Iron poisoning causes abdominal pain, vomiting, diarrhea, lethargy, and dehydration.
- 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.
- Depression (Child and Adolescent)
Depression is a painful sadness that interferes with a child's schoolwork, family life, and social activities.
- Diabetic ketoacidosis
Symptoms of diabetic ketoacidosis include dry mouth, excessive thirst and urination, and more.
- Diverticulosis
Diverticulosis is a condition of the colon and causes pain, cramping, infection, bleeding, and other symptoms.
- Ulcerative colitis
Ulcerative colitis causes swelling in the large intestine and can lead to cramping, diarrhea, and more.
- Lyme disease
Lyme disease is a bacterial infection spread through tick bites; symptoms include rash, fever chills, and more.
- Rotavirus
Rotavirus is an inflammation of the stomach and intestines leading to diarrhea and vomiting.
- Salmonella
Salmonella are a type of bacteria that can infect the body and cause diarrhea, cramps, and fever.
- Shigellosis
Shigellosis is irritation of the stomach and intestine and causes bloody diarrhea, abdominal pain, and fever.
- Stool holding (encopresis)
Young children with encopresis soil their underwear or clothing with unintentional bowel movements.
- Antibiotic-associated diarrhea
Antibiotic-associated diarrhea is frequent, watery bowel movements that happen after taking antibiotics.
- 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.
- Colon polyps
Colon polyps are growths that form in the lining of the colon, and can cause constipation, diarrhea and more.
- Concussion
A concussion is an injury to the brain, and may cause confusion, drowsiness, memory loss and headache.
- Crohn's disease
Crohn's disease is a digestive condition that causes swelling, cramping, diarrhea, and nutritional problems.
- Cystic fibrosis
Cystic fibrosis is an inherited disease that causes the body to produce abnormally thick and sticky mucus.
- Alzheimer's disease
Alzheimer's disease is type of dementia that causes memory loss, as well as thinking and behavior problems.
- Anemia, iron deficiency
Anemia , a lack of red blood cells, can cause fatigue, pale skin and gums, brittle nails, irritability, and more.
- Sickle cell disease
Sickle cell disease symptoms include repeated infections, yellow skin, fatigue, dizziness, pain, and more.
- Anemia
Anemia, a lack of red blood cells, can cause fatigue, pale skin, weakness, dizziness, headache and more.
- Anemia, chronic disease
Anemia of chronic disease (ACD) can cause fatigue, pale skin, weakness, dizziness, headache and more.
- Giardiasis
Giardiasis is an infection of the small intestine causing diarrhea, gas, bloating, nausea and stomach cramps.
- Parkinson disease
Parkinson's disease is a disorder of the nervous system causing tremors stiffness and slow movement.
- Post-traumatic stress disorder (PTSD)
Post-traumatic stress disorder (PTSD) can cause tension, depression, and other symptoms of anxiety.
- Insomnia
Insomnia symptoms include trouble staying asleep at night, feeling tired during the day, moodiness, and more.
- Nicotine withdrawal/cessation of smoking
Symptoms of nicotine withdrawal include a craving for cigarettes, headaches, bad mood, anxiety, and more.
- Inhalant intoxication
Inhalant intoxication can cause euphoria, disorientation, confusion, slurred speech, dizziness, and more.
- Local anesthetic toxicity
Symptoms of local anesthetic toxicity include lightheadedness, confusion, dizziness, abnormal taste, and more.
- Grief reaction
Grief reaction, the way someone copes with a loss, causes include anger, sadness, anxiety, guilt, and more.
- Intoxication
Symptoms of intoxication include euphoria, slowed reaction time, dizziness, confusion, numbness, and more.
- Head injury
Symptoms of a head injury vary but include headache, nausea, dizziness, memory problems, confusion, and more.
- Dementia with Lewy bodies
Dementia with Lewy bodies is a brain disorder that causes problems managing memory and movement.
- Hypothyroidism (adult)
Hypothyroidism your body functions slow down, making you gain weight and feel tired all the time.
- Narcotic abuse
Narcotic abuse can cause fatigue, shallow breathing, anxiety, euphoria, vomiting, confusion, and constipation.
- Night terrors
Night terrors are a sleep disorder that cause people to partially wake up confused and terrified.
- Epilepsy (complex partial seizures)
During complex partial seizures, people lose consciousness briefly.
- Amebiasis
Amebiasis is an intestinal parasitic infection causing diarrhea, cramps, gas, fever, and fatigue.
- Puberty
Puberty is the time when a young person becomes sexually mature.
- Brain infection
A brain infection is inflammation of the brain or spinal cord and can cause nausea, fever, seizures and more.
- Nitrogen narcosis
Nitrogen narcosis is caused by breathing compressed air causing coordination issues, lightheadedness, and more.
- Toxic shock syndrome
Toxic shock syndrome is a serious bacterial infection and causes fever, low blood pressure, a rash, and more.
- Typhoid fever
Typhoid fever is a life-threatening illness and causes fever, general aches and pains, headache, and weakness.
- Cat-scratch disease
Cat scratch disease is a bacterial infection caused by a cat scratch or bite.
- Mesenteric lymphadenitis
Mesenteric lymphadenitis is an inflammation of abdominal lymph nodes causing pain, diarrhea, fever, and more.
- 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.
- Mad cow disease
Mad cow disease is spread to humans by eating infected cows causing depression, anxiety, psychosis, and more.
- Hypothyroidism (infant and child)
Hypothyroidism in children can cause delayed growth, weight gain, a puffy face, a large tongue, and more.
- Brain tumor
Primary brain tumors are often benign but can cause seizures, ongoing headaches, or loss of coordination.
- Ricin poisoning
Ricin is a dangerous poison in castor beans, and causes trouble breathing, nausea, fever and sweating.
- Shock
Shock causes pale and clammy skin, rapid pulse, low blood pressure, chest pain, confusion, and more.
- West nile virus
West Nile virus is an infection spread by mosquitoes, and can cause diarrhea, fever, abdominal pain, and more.
- Cholera
Cholera is a bacterial infection that can cause diarrhea, nausea, excessive thirst, dry skin and vomiting.
- Carcinoid syndrome
Carcinoid syndrome is a group of symptoms such as flushing, wheezing, and diarrhea that may develop in people who have carcinoid cancer.
