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

Aneurysms

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

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

Teeth grinding (bruxism)

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.

We use the data you provide to deliver you the content you requested. To provide you with the most relevant and helpful information, we may combine your email and website data with other information we have about you. If you are a Mayo Clinic patient, we will only use your protected health information as outlined in our Notice of Privacy Practices. You may opt out of email communications at any time by clicking on the unsubscribe link in the email.

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