In-depth

Acromegaly

Acute sinusitis

Alcohol intolerance

Amenorrhea

Although the absence of menstruation (amenorrhea) is seldom serious, the condition can often be linked to an underlying problem requiring treatment.

Anemia

Aplastic anemia

Arteriovenous malformation

Aspergillosis

Astigmatism

Autoimmune neurological disorder

Bee sting

Behcet's disease

Bell's palsy

Brain aneurysm

Brain AVM (arteriovenous malformation)

Brain tumor

Brucellosis

Bruxism (teeth grinding)

Carbon monoxide poisoning

Carotid artery disease

Central sleep apnea

Chagas disease

Chiari malformation

Child abuse

Chronic sinusitis

Coarctation of the aorta

Cold sore

Common cold

Concussion

Convergence insufficiency

Cough headaches

CSF leak (Cerebrospinal fluid leak)

Cushing syndrome

Dehydration

Dengue fever

Depression (major depressive disorder)

Ear infection (middle ear)

Ehrlichiosis and anaplasmosis

Eisenmenger syndrome

Encephalitis

Essential thrombocythemia

Exercise headaches

Eyestrain

Farsightedness

Fever

Fibromuscular dysplasia

Fibromyalgia

Galactorrhea

Genital herpes

Giant cell arteritis

Glioblastoma

Glioma

H1N1 flu (swine flu)

Hangovers

Hantavirus pulmonary syndrome

Headaches in children

Heat exhaustion

Heatstroke

Hemophilia

Histoplasmosis

HIV/AIDS

Hydrocele

Hyperglycemia in diabetes

Hyperparathyroidism

Hyponatremia

Hypoparathyroidism

Impacted wisdom teeth

Influenza (flu)

Intermittent explosive disorder

Intracranial hematoma

Iron deficiency anemia

Jellyfish stings

Lead poisoning

Legionnaires' disease

Listeria infection

Lung cancer

Lupus

Lyme disease

Malaria

Meningioma

Meningitis

Mental illness

Migraine

Mononucleosis

Myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD)

Myocarditis

Nasal polyps

Nasopharyngeal carcinoma

Nearsightedness

Obstructive sleep apnea

Oligodendroglioma

Paget's disease of bone

Panic attacks and panic disorder

Parvovirus infection

Persistent post-concussive symptoms (Post-concussion syndrome)

Pheochromocytoma

Pituitary tumors

Plague

Pneumonia

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.

Polycystic kidney disease

Polycythemia vera

Polymorphous light eruption

Post COVID syndrome

Postpartum preeclampsia

Preeclampsia

Premenstrual syndrome (PMS)

Presbyopia

Prolactinoma

Pseudotumor cerebri (idiopathic intracranial hypertension)

Pulmonary edema

Rabies

Radiation sickness

Recurrent breast cancer

Respiratory syncytial virus (RSV)

Rubella

Salmonella infection

Scarlet fever

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

Schwannomatosis

Serotonin syndrome

Shingles

Sleep apnea

Smallpox

Staph infections

Strep throat

Stroke

Sunburn

Takayasu's arteritis

Teen depression

Tension headache

Thrombocytosis

Thunderclap headaches

TMJ disorders

Tonic-clonic (grand mal) seizure

Tonsillitis

Toxic shock syndrome

Traumatic brain injury

Trichinosis

Typhoid fever

Valley fever

West Nile virus

Whiplash

From Mayo Clinic to your inbox

Sign up for free and stay up to date on research advancements, health tips, current health topics, and expertise on managing health. Click here for an email preview.

To provide you with the most relevant and helpful information, and understand which information is beneficial, we may combine your email and website usage information with other information we have about you. If you are a Mayo Clinic patient, this could include protected health information. If we combine this information with your protected health information, we will treat all of that information as protected health information and will only use or disclose that information as set forth in our notice of privacy practices. You may opt-out of email communications at any time by clicking on the unsubscribe link in the e-mail.

June 03, 2020

See also

  1. Acromegaly
  2. Acute sinusitis
  3. Acute sinusitis: Do over-the-counter treatments help?
  4. Alcohol intolerance
  5. Amenorrhea
  6. Anemia
  7. Aneurysm Surgery
  8. Antidepressant withdrawal: Is there such a thing?
  9. Antidepressants and alcohol: What's the concern?
  10. Antidepressants and weight gain: What causes it?
  11. Antidepressants: Can they stop working?
  12. Antidepressants for children and teens
  13. Antidepressants: Side effects
  14. Antidepressants: Selecting one that's right for you
  15. Antidepressants: Which cause the fewest sexual side effects?
  16. Aplastic anemia
  17. Arteriovenous malformation
  18. Aspergillosis
  19. Astigmatism
  20. Atypical antidepressants
  21. Autoimmune neurological disorder
  22. Bee sting
  23. Behcet's disease
  24. Bell's palsy
  25. Brain aneurysm
  26. Brain AVM (arteriovenous malformation)
  27. Brain tumor
  28. Brain Tumor
  29. What is a brain tumor? A Mayo Clinic expert explains
  30. Brain tumor FAQs
  31. Brucellosis
  32. Bump on the head: When is it a serious head injury?
  33. Carbon monoxide poisoning
  34. Carotid artery disease
  35. Central sleep apnea
  36. Chagas disease
  37. Chiari malformation
  38. Child abuse
  39. Chronic sinusitis
  40. Clinical depression: What does that mean?
  41. Coarctation of the aorta
  42. Cold and flu viruses: How long can they live outside the body?
  43. Cold or allergy: Which is it?
  44. Cold remedies
  45. Cold sore
  46. Cold symptoms: Does drinking milk increase phlegm?
  47. Common cold
  48. Concussion
  49. Concussion in children
  50. Concussion Recovery
  51. Concussion Telemedicine
  52. Convergence insufficiency
  53. Cough headaches
  54. CPAP machines: Tips for avoiding 10 common problems
  55. Craving and chewing ice: A sign of anemia?
  56. CSF leak (Cerebrospinal fluid leak)
  57. Cushing syndrome
  58. Dehydration
  59. Dengue fever
  60. Depression and anxiety: Can I have both?
  61. Depression, anxiety and exercise
  62. What is depression? A Mayo Clinic expert explains.
  63. Depression in women: Understanding the gender gap
  64. Depression (major depressive disorder)
  65. Depression: Supporting a family member or friend
  66. Ear infection (middle ear)
  67. Early HIV symptoms: What are they?
  68. Ehrlichiosis and anaplasmosis
  69. Eisenmenger syndrome
  70. Encephalitis
  71. Essential thrombocythemia
  72. Exercise headaches
  73. Eyestrain
  74. Farsightedness
  75. Fever
  76. Fever treatment: Quick guide to treating a fever
  77. Fibromuscular dysplasia
  78. Fibromyalgia
  79. Flu masks
  80. Flu shots
  81. Flu: When to see a doctor?
  82. Flu vaccine: Safe for people with egg allergy?
  83. Galactorrhea
  84. Genital herpes
  85. Genital herpes: Can you get it from a toilet seat?
  86. Giant cell arteritis
  87. Glioblastoma
  88. Glioma
  89. H1N1 flu (swine flu)
  90. Hangovers
  91. Hantavirus pulmonary syndrome
  92. Headaches and stress
  93. Headaches in children
  94. Heat exhaustion
  95. Heatstroke
  96. Hemophilia
  97. High-dose flu vaccines: How are they different from other flu vaccines?
  98. Histoplasmosis
  99. HIV/AIDS
  100. Humidifiers
  101. Hydrocele
  102. Hyperglycemia in diabetes
  103. Hyperparathyroidism
  104. Hyponatremia
  105. Hypoparathyroidism
  106. Impacted wisdom teeth
  107. Influenza (flu)
  108. Intermittent explosive disorder
  109. Intervention: Help a loved one overcome addiction
  110. Intracranial hematoma
  111. Iron deficiency anemia
  112. Jellyfish stings
  113. Lead poisoning
  114. Legionnaires' disease
  115. Listeria infection
  116. Living with Brain Tumors
  117. Living with Lupus
  118. Long Term Brain Cancer Survivor
  119. Low blood sodium in older adults: A concern?
  120. Lung cancer
  121. Infographic: Lung Cancer
  122. Lung Cancer
  123. Lung nodules: Can they be cancerous?
  124. Lupus
  125. Lyme disease
  126. Malaria
  127. Male depression: Understanding the issues
  128. Managing Headaches
  129. Managing Meningitis
  130. MAOIs and diet: Is it necessary to restrict tyramine?
  131. Marathon and the Heat
  132. Marijuana and depression
  133. Mayo Clinic Minute: Arteriovenous malformation or AVM
  134. Mayo Clinic Minute: Meningitis 101 for college students
  135. Mayo Clinic Minute: Prevent migraines with magnetic stimulation
  136. Mayo Clinic Minute: Weathering migraines
  137. Mayo Clinic Minute: What you should know about bats and rabies
  138. Mayo Clinic Minute: Why getting vaccinated for the flu is doubly important this season
  139. Mayo Clinic Minute: Will there be a Lyme disease vaccine for humans?
  140. Meningioma
  141. Meningitis
  142. Mental health: Overcoming the stigma of mental illness
  143. Mental health providers: Tips on finding one
  144. Mental illness
  145. Migraine
  146. What is a migraine? A Mayo Clinic expert explains
  147. Migraine medicines and antidepressants
  148. Migraine FAQs
  149. Migraine treatment: Can antidepressants help?
  150. Migraines and gastrointestinal problems: Is there a link?
  151. Migraines and Vertigo
  152. Migraines: Are they triggered by weather changes?
  153. Alleviating migraine pain
  154. Monoamine oxidase inhibitors (MAOIs)
  155. Mononucleosis
  156. Mononucleosis: Can it recur?
  157. Mononucleosis and Epstein-Barr: What's the connection?
  158. Myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD)
  159. Myocarditis
  160. Nasal polyps
  161. Nasopharyngeal carcinoma
  162. Natural remedies for depression: Are they effective?
  163. Nearsightedness
  164. Nervous breakdown: What does it mean?
  165. Neti pot: Can it clear my nose?
  166. New Test for Preeclampsia
  167. New Way to Fix Aneurysms
  168. Nighttime panic attacks: What causes them?
  169. He's the bravest kid I've ever seen
  170. Obstructive sleep apnea
  171. Obstructive Sleep Apnea
  172. Occipital nerve stimulation: Effective migraine treatment?
  173. Ocular migraine: When to seek help
  174. Oligodendroglioma
  175. Paget's disease of bone
  176. Pain and depression: Is there a link?
  177. Panic attacks and panic disorder
  178. Parvovirus infection
  179. Persistent post-concussive symptoms (Post-concussion syndrome)
  180. Pheochromocytoma
  181. Pituitary tumors
  182. Plague
  183. Plugged ears: What is the remedy?
  184. Pneumonia
  185. Polio
  186. Polycystic kidney disease
  187. Polycythemia vera
  188. Polymorphous light eruption
  189. Post COVID syndrome
  190. Postpartum preeclampsia
  191. Preeclampsia
  192. Premenstrual dysphoric disorder
  193. Premenstrual syndrome (PMS)
  194. Presbyopia
  195. Prolactinoma
  196. Pseudotumor cerebri (idiopathic intracranial hypertension)
  197. Pulmonary edema
  198. Punk Guitarist Survives Brain Tumor
  199. Rabies
  200. Radiation sickness
  201. Recurrent breast cancer
  202. Recurring strep throat: When is tonsillectomy useful?
  203. Respiratory syncytial virus (RSV)
  204. Rhabdomyolysis
  205. Rubella
  206. Salmonella infection
  207. Scarlet fever
  208. Schwannomatosis
  209. Selective serotonin reuptake inhibitors (SSRIs)
  210. Self-care for the flu
  211. Serotonin and norepinephrine reuptake inhibitors (SNRIs)
  212. Serotonin syndrome
  213. Shingles
  214. Shingles and alcohol
  215. Shingles vaccine: Can I transmit the vaccine virus to others?
  216. Shingles vaccine: Should I get it?
  217. Sinus infection and toothache: Any connection?
  218. Sleep apnea
  219. Smallpox
  220. Staph infections
  221. Strep throat
  222. Strep throat in young children: A common diagnosis?
  223. Stroke
  224. What is a stroke? A Mayo Clinic expert explains
  225. Strokes FAQ Neurologist Robert D. Brown, Jr. M.D., M.P.H., answers the most frequently asked questions about strokes.
  226. Stroke rehabilitation
  227. Sun damage
  228. Sunburn
  229. Super Survivor Conquers Cancer
  230. Takayasu's arteritis
  231. Teen depression
  232. Bruxism (teeth grinding)
  233. Tension headache
  234. Relieving tension-type headaches
  235. Thermometers: Understand the options
  236. Thrombocytosis
  237. Thunderclap headaches
  238. TMJ disorders
  239. Tonic-clonic (grand mal) seizure
  240. Tonsillitis
  241. Toxic shock syndrome
  242. Traumatic brain injury
  243. Treatment of parathyroid disease at Mayo Clinic
  244. Treatment-resistant depression
  245. Trichinosis
  246. Tricyclic antidepressants
  247. Typhoid fever
  248. Typing with Brain Waves
  249. Valley fever
  250. Vicks VapoRub: An effective nasal decongestant?
  251. Video: 3 things you didn't know about cold sores
  252. CPAP: How it works
  253. Obstructive sleep apnea: What happens?
  254. Vitamin B-12 and depression
  255. Walking pneumonia
  256. Warm-mist versus cool-mist humidifier: Which is better for a cold?
  257. West Nile virus
  258. What's the difference between H1N1 flu and influenza A?
  259. Which CPAP masks are best for you?
  260. Whiplash
  261. Wisdom teeth removal: When is it necessary?
  262. Do zinc supplements shorten colds?