In-depth

Achalasia

Acute coronary syndrome

Acute kidney injury

Acute liver failure

Addison's disease

Airplane ear

Alcohol intolerance

Alcohol poisoning

Alcohol use disorder

Alcoholic hepatitis (Alcohol-associated hepatitis)

Allergies

Alpha-gal syndrome

Amniotic fluid embolism

Anaphylaxis

Aneurysms

Angina

Anthrax

Antibiotic-associated diarrhea

Appendicitis

Ascariasis

Atypical teratoid rhabdoid tumor (ATRT)

Autoimmune hepatitis

Bee sting

Benign paroxysmal positional vertigo (BPPV)

Bile reflux

Bird flu (avian influenza)

Blastocystis hominis

Botulism

Brain aneurysm

Brain tumor

Burkitt lymphoma

C. difficile infection

Carbon monoxide poisoning

Carcinoid tumors

Cardiogenic shock

Castleman disease

Celiac disease

Central nervous system (CNS) lymphoma

Chagas disease

Chest pain

Cholecystitis

Cholera

Choroid plexus carcinoma

Chronic daily headaches

Chronic granulomatous disease

Chronic sinusitis

Cirrhosis

Concussion

Congenital adrenal hyperplasia

Constipation in children

Coronavirus disease 2019 (COVID-19)

Craniopharyngioma

CSF leak (Cerebrospinal fluid leak)

Cyclic vomiting syndrome

Dengue fever

Diabetes insipidus

Diabetic coma

Diabetic ketoacidosis

Diabetic neuropathy

Diffuse large B-cell lymphoma

Diffuse midline glioma (DMG)

Diverticulitis

Drug allergy

Dumping syndrome

E. coli

Ear infection (middle ear)

Ectopic pregnancy

Egg allergy

Encephalitis

Endometriosis

Enlarged liver

Eosinophilic esophagitis

Esophagitis

Exercise headaches

Extranodal marginal zone lymphoma of mucosa-associated lymphoid tissue (MALT)

Food poisoning (foodborne illness)

Functional dyspepsia

Gallbladder cancer

Gastritis

Gastroparesis

Giardia infection (giardiasis)

Glaucoma

Glioblastoma

Glioma

H1N1 flu (swine flu)

Hangovers

Hantavirus pulmonary syndrome

Headaches in children

Heart attack

Heart failure

Heat exhaustion

Heatstroke

Helicobacter pylori (H. pylori) infection

Hemangioblastoma

Hemolytic uremic syndrome (HUS)

Hemophilia

Henoch-Schonlein purpura

Hepatitis A

Hepatitis B

Hepatitis C

Hirschsprung's disease

Hydrocele

Hypercalcemia

Hyperglycemia in diabetes

Hyponatremia

Indigestion

Infant reflux

Intestinal ischemia

Intestinal obstruction

Intracranial hematoma

Intussusception

Jellyfish stings

Kawasaki disease

Kidney stones

Krabbe disease

Lactose intolerance

Lead poisoning

Legionnaires' disease

Listeria infection

Liver cancer

Liver disease

Liver hemangioma

Low blood pressure (hypotension)

Malaria

Mantle cell lymphoma

Marginal zone lymphoma

MCAD deficiency

Median arcuate ligament syndrome (MALS)

Medulloblastoma

Meningitis

Menstrual cramps

A monthly period is bad enough. Add in painful menstrual cramps, and you may be cursing this thing called womanhood. How do you get relief?

Mesenteric lymphadenitis

Metastatic (stage 4) prostate cancer

Migraine

Milk allergy

Molar pregnancy

Morning sickness

Multiple myeloma

Multisystem inflammatory syndrome in children (MIS-C)

Myocardial ischemia

Norovirus infection

Orchitis

Orthostatic hypotension (postural hypotension)

Ovarian cancer

Ovarian cysts

Ovarian hyperstimulation syndrome

Pancreatic cysts

Pancreatitis

Parvovirus infection

Peanut allergy

Pelvic inflammatory disease (PID)

Peptic ulcer

Peripheral T-cell lymphoma

Peritoneal carcinomatosis

Peritonitis

Pilocytic astrocytoma

Pineal gland tumor

Pinworm infection

Pituitary tumors and adenomas

Plague

Polio

One of the most feared diseases of the 20th century, polio has been eradicated from the developed world but remains a threat in less developed nations.

Polymorphous light eruption

Porphyria

Postpartum preeclampsia

Preeclampsia

Primary CNS lymphoma

Pseudomembranous colitis

Pseudotumor cerebri (idiopathic intracranial hypertension)

Pyloric stenosis

Radiation sickness

Recurrent breast cancer

Reye's syndrome

Rotavirus

Ruptured eardrum (perforated eardrum)

Salmonella infection

Scarlet fever

Scarlet fever is a bacterial infection that causes a rash, fever and sore throat and usually affects children and adolescents.

Scrotal masses

Shaken baby syndrome

Shellfish allergy

Small bowel obstruction

Smallpox

Social anxiety disorder (social phobia)

Spider bites

Spinal headaches

Spontaneous coronary artery dissection (SCAD)

Staph infections

Stomach cancer

Strep throat

Subarachnoid hemorrhage

Sudden cardiac arrest

Symptom Checker

Foot pain? Headache? Sore throat? Skin rash? Use the Symptom Checker to find out what's causing your symptom.

Tapeworm infection

Testicular torsion

Thunderclap headaches

Toxic hepatitis

Toxic shock syndrome

Traumatic brain injury

Traveler's diarrhea

Vascular rings

Vasovagal syncope

Ventricular fibrillation

Viral hepatitis

Wheat allergy

Whooping cough

Wilson's disease

Zollinger-Ellison syndrome

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July 10, 2026

See also

  1. Achalasia
  2. Acute coronary syndrome
  3. Acute liver failure
  4. Addison's disease
  5. Adrenal fatigue: What causes it?
  6. Airplane ear
  7. Alcohol intolerance
  8. Alcohol use disorder
  9. Allergy medications: Know your options
  10. Allergy-proof your home
  11. Anaphylaxis
  12. Anaphylaxis: First aid
  13. Aneurysms
  14. Angina
  15. Anthrax
  16. Antibiotic-associated diarrhea
  17. Ascariasis
  18. Aspirin allergy: What are the symptoms?
  19. Astrocytoma
  20. Atypical teratoid rhabdoid tumor (ATRT)
  21. Autoimmune hepatitis
  22. Beating Ovarian Cancer
  23. Bee sting
  24. Benign paroxysmal positional vertigo (BPPV)
  25. Bile reflux
  26. Blastocystis hominis
  27. Botulism
  28. Brain aneurysm
  29. Brain tumor
  30. Brain tumor FAQs
  31. Brainstem tumor
  32. Bump on the head: When is it a serious head injury?
  33. Burkitt lymphoma
  34. CA 125 test: A screening test for ovarian cancer?
  35. Calcium supplements: A risk factor for heart attack?
  36. Carbon monoxide poisoning
  37. Cardiac asthma: What causes it?
  38. Cardiogenic shock
  39. Celiac disease
  40. Central nervous system (CNS) lymphoma
  41. Chest pain
  42. Cholecystitis
  43. Chronic daily headaches
  44. Chronic granulomatous disease
  45. Chronic kidney disease
  46. Chronic kidney disease: Is a clinical trial right for me?
  47. Chronic sinusitis
  48. Cirrhosis
  49. Cirrhosis self-care and diet
  50. Concussion
  51. Concussion in children: What are the symptoms?
  52. Concussion Telemedicine
  53. Congenital adrenal hyperplasia
  54. Constipation in children
  55. Coronavirus disease 2019 (COVID-19)
  56. Coronavirus: What is it and how can I protect myself?
  57. COVID-19 travel advice
  58. COVID-19 vaccines for kids: What you need to know
  59. COVID-19 vaccines: Get the facts
  60. COVID-19 vs. flu: Similarities and differences
  61. COVID-19: Who's at higher risk of serious symptoms?
  62. Craniopharyngioma
  63. CSF leak (Cerebrospinal fluid leak)
  64. Cyclic vomiting syndrome
  65. Debunking COVID-19 myths
  66. Dengue fever
  67. Diabetic coma
  68. Diabetic Gastroparesis
  69. Diabetic ketoacidosis
  70. Diabetic neuropathy
  71. Diabetic neuropathy types: Symptoms tell the story
  72. Different types of COVID-19 vaccines: How they work
  73. Diffuse large B-cell lymphoma
  74. Diffuse midline glioma (DMG)
  75. Digestion: How long does it take?
  76. Diverticulitis
  77. Dumping syndrome
  78. E. coli
  79. Ear infection (middle ear)
  80. Ectopic pregnancy
  81. Effectively managing chronic kidney disease
  82. Egg allergy
  83. EGPA (formerly Churg-Strauss syndrome)
  84. Encephalitis
  85. Endometriosis
  86. Endometriosis FAQs
  87. Esophagitis
  88. Extranodal marginal zone lymphoma of mucosa-associated lymphoid tissue (MALT)
  89. Fecal transplant treatment of C. difficile at Mayo Clinic
  90. Fight coronavirus (COVID-19) transmission at home
  91. Flu masks
  92. Food allergy
  93. Food allergy vs. food intolerance: What's the difference?
  94. Food poisoning (foodborne illness)
  95. Fructose intolerance: Which foods to avoid?
  96. Gallbladder cancer
  97. Gallbladder polyps: Can they be cancerous?
  98. Gastritis
  99. Giardia infection (giardiasis)
  100. Glaucoma
  101. Glioblastoma
  102. Glioma vs. glioblastoma: What's the difference?
  103. Guide to different tick species and the diseases they carry
  104. H1N1 flu (swine flu)
  105. Hantavirus pulmonary syndrome
  106. Headaches and hormones: What's the connection?
  107. Headaches in children
  108. Headaches: Treatment depends on your diagnosis and symptoms
  109. Heart attack
  110. Heart attack prevention: Should I avoid secondhand smoke?
  111. Heart attack symptoms: Know what's a medical emergency
  112. Heart Attack Timing
  113. Heart failure
  114. Heart failure and sex: Is it safe?
  115. Heatstroke
  116. Helicobacter pylori (H. pylori) infection
  117. Hemangioblastoma
  118. Hemolytic uremic syndrome (HUS)
  119. Hemophilia
  120. Henoch-Schonlein purpura
  121. Hepatitis B and Hepatitis C: What's the difference?
  122. Hepatitis C
  123. Hepatitis C screening
  124. Hepatitis C: How common is sexual transmission?
  125. Hepatitis C: What happens in end-stage liver disease?
  126. Herd immunity and COVID-19: What you need to know
  127. Hirschsprung's disease
  128. How do COVID-19 antibody tests differ from diagnostic tests?
  129. How kidneys work
  130. How well do face masks protect against COVID-19?
  131. Hypercalcemia
  132. Hyponatremia
  133. Infant reflux
  134. Infographic: Multiple Myeloma
  135. Intestinal ischemia
  136. Intracranial hematoma
  137. Intussusception
  138. Is hydroxychloroquine a treatment for COVID-19?
  139. Jellyfish stings
  140. Kawasaki disease
  141. Kidney disease FAQs
  142. Kidney stones
  143. Lead poisoning
  144. Listeria infection
  145. Liver cancer
  146. Liver disease
  147. Liver disease: How medications can harm the liver
  148. Liver hemangioma
  149. Living with Brain Tumors
  150. Long COVID: Lasting effects of COVID-19
  151. Long Term Brain Cancer Survivor
  152. Low blood sodium in older adults: A concern?
  153. Low-phosphorus diet: Helpful for kidney disease?
  154. Malaria
  155. Mantle cell lymphoma
  156. Marathon and the Heat
  157. Marginal zone lymphoma
  158. Mayo Clinic Minute: Avoiding summer E. coli infection
  159. Mayo Clinic Minute: Meningitis 101 for college students
  160. Mayo Clinic Minute: Prevent migraines with magnetic stimulation
  161. Mayo Clinic Minute: Weathering migraines
  162. Mayo Clinic Minute: You're washing your hands all wrong
  163. Mayo Clinic study reporting increased incidence of C. difficile infection
  164. MCAD deficiency
  165. Median arcuate ligament syndrome (MALS)
  166. Medications for liver failure
  167. Medulloblastoma
  168. Meningitis
  169. Migraine
  170. Migraine FAQs
  171. Migraine treatment: Can antidepressants help?
  172. Migraines and gastrointestinal problems: Is there a link?
  173. Migraines and Vertigo
  174. Migraines: Are they triggered by weather changes?
  175. Migraines: Simple steps to head off the pain
  176. Molar pregnancy
  177. Morning sickness
  178. Multiple myeloma
  179. Multisystem inflammatory syndrome in children (MIS-C)
  180. Myocardial ischemia
  181. New Hep C Treatment
  182. New Test for Preeclampsia
  183. Nighttime headaches: How can I get relief?
  184. Nighttime panic attacks: What causes them?
  185. Norovirus infection
  186. NSAIDs: Do they increase my risk of heart attack and stroke?
  187. Orchitis
  188. Orthostatic hypotension (postural hypotension)
  189. Ovarian cancer
  190. Ovarian cancer: Still possible after hysterectomy?
  191. Ovarian hyperstimulation syndrome
  192. Pain Management
  193. Pancreatic cysts
  194. Pap test: Can it detect ovarian cancer?
  195. Parvovirus infection
  196. Peanut allergy
  197. Pelvic inflammatory disease (PID)
  198. Peripheral T-cell lymphoma
  199. Peritoneal carcinomatosis
  200. Peritonitis
  201. Pilocytic astrocytoma
  202. Pineal gland tumor
  203. Pinworm infection
  204. Pituitary tumors and adenomas
  205. Plague
  206. Polio
  207. Polymorphous light eruption
  208. Porphyria
  209. Postpartum preeclampsia
  210. Preeclampsia
  211. Pregnancy and COVID-19: What are the risks?
  212. Preventing Kidney Stones
  213. Pseudomembranous colitis
  214. Punk Guitarist Survives Brain Tumor
  215. Pyloric stenosis
  216. Radiation sickness
  217. Recurrent breast cancer
  218. Rhabdomyolysis
  219. Ricin poisoning
  220. Rotavirus
  221. Ruptured eardrum (perforated eardrum)
  222. Safe outdoor activities during the COVID-19 pandemic
  223. Safety tips for attending school during COVID-19
  224. Salmonella infection
  225. Salt craving: A symptom of Addison's disease?
  226. Scarlet fever
  227. Scrotal masses
  228. Self-care for the flu
  229. Sex and COVID-19
  230. Shaken baby syndrome
  231. Silent heart attack: What are the risks?
  232. Smallpox
  233. Social anxiety disorder (social phobia)
  234. Spider bites
  235. Spinal headaches
  236. Spontaneous coronary artery dissection (SCAD)
  237. Staph infections
  238. Strep throat
  239. Subarachnoid hemorrhage
  240. Sulfa allergy: Which medicines should I avoid?
  241. Tapeworm infection
  242. Testicular torsion
  243. Thunderclap headaches
  244. Toxic shock syndrome
  245. Vascular rings
  246. Vasovagal syncope
  247. Ventricular fibrillation
  248. Viral hepatitis
  249. What is a heart failure action plan?
  250. What is a migraine? A Mayo Clinic expert explains
  251. What is cirrhosis? A Mayo Clinic expert explains
  252. What is kidney disease? An expert explains
  253. What is stomach cancer? A Mayo Clinic expert explains
  254. Wheat allergy
  255. Whooping cough
  256. Whooping cough
  257. Why isn't there a hepatitis C vaccine?
  258. Wilson's disease
  259. Zollinger-Ellison syndrome