Prevalence and Incidence of Head Conditions

Prevalance of types of Head Conditions:

For details see prevalence of types of Head Conditions analysis; summary of available prevalence data:

• Jaw conditions: estimated 10 million women in the USA (NWHIC)
• Dental conditions: 1.1 per 100 (NHIS96: acute dental conditions)
• Chronic headache: estimated 45 million Americans (NINDS)
• Headache: 45 million Americans get chronic headaches. 20 million American women (NWHIC).
• Microcephaly: rare
• Migraine: 28 million Americans (NINDS)
• Neurofibromatosis-2: 1 per 25,000 people suffer from neurofibromatosis type 2, Genetics Home Reference website
• Temporal arteritis: 200 per 100,000 people over 50.
• Cerebrovascular Conditions: 30 per 1000 - NHIS95
• Vision Impairment: 2.4 million Americans
• Refractive Eye Disorders: 120 million people
• Myopia: 70 million Americans; over 25 percent of all adult Americans.
• Hyperopia: 22.4% of population self-reported having long-sightedness in Australia 2001 (ABS 2001 National Health Survey, Australia’s Health 2004, AIHW)
• Astigmatism: 45 million Americans (dubious estimate based on "two thirds of people with myopia also have astigmatism")
• Blindness: 1,100,000 people are legally blind in the US (Research to Prevent Blindness, NISE, NSF)
• Presbyopia: 9.0% of population self-reported having presbyopia in Australia 2001 (ABS 2001 National Health Survey, Australia’s Health 2004, AIHW)
• Color blindness: 13 per 1000 - NHIS95
• Open-angle glaucoma: about 3 million Americans, many not yet diagnosed.
• Age-related macular degeneration: 10,000,000 people have reduced vision due to age-related macular degeneration in the US (Research to Prevent Blindness, NISE, NSF)
• Cornea disorders: 11,000,000 people experience corneal disorders such as herpes or dry eye in the US (Research to Prevent Blindness, NISE, NSF)
• Retina Conditions: 1,800,000 people have severely impaired vision because of retinal disease in the US (Research to Prevent Blindness, NISE, NSF)
• Retinitis Pigmentosa: 100,000 people have retinitis pigmentosa which can cause retinal deterioration and blindness in the US (Research to Prevent Blindness, NISE, NSF)
• Corneal Dystrophies: 4,200 people have reduced vision because of corneal dystrophies in the US (Research to Prevent Blindness, NISE, NSF)
• Keratoconus: 1-in-2000 Americans
• Tinnitus: 45 per 1000 (NHIS95); 12 million Americans
• Hearing Impairment: 22 million; 158 per 1000 (NHIS95)
• Deafness: 4 million people (unreliable estimate)
• Cataracts: 5,500,000 people have a cataract interfering with their vision in the US (Research to Prevent Blindness, NISE, NSF)
• Glaucoma: 2,000,000 people are visually impaired by glaucoma in the US (Research to Prevent Blindness, NISE, NSF)
• Schizencephaly: extremely rare
• Alzheimer's Disease: more than 4 million Americans (CDC); estimated 4 million people in the U.S (NHWIC)
• Dandruff: 50 million
• Red-green color blindness: about 10% of males
• Deuteranopia: about 1% of white males
• Protanopia: about 1% of white males
• Ocular Herpes: 400,000 Americans have had some form
• Parkinson's Disease: 1 million people (unreliable estimate)
• Sinusitis: 37 million annually in the USA; 33 million reported to CDC (NIAID)
• Chronic Sinusitis: 12.6% (NIAID); 152 per 1000 - NHIS95
• Allergic rhinitis: 10% of the population with allergic rhinitis/hay fever in the US (Mayo Clinic)
• Hay fever: 35 million Americans (NIAID: pollen allergies)
• Deviated Septum: 8 per 1000 - NHIS95
• Chronic tonsilitis: 7 per 1000 - NHIS95 (chronic disease of tonsils or adenoids)
• Retinoblastoma: 3% of cancers in children under the age of 15 are due to retinoblastomas, Genetics Home Reference website
• Amyotrophic lateral sclerosis: 4-8 per 1000,000 people suffer from amyotrophic lateral sclerosis worldwide, Genetics Home Reference website
• Encephaloceles: rare
• Autoimmune uveitis: 4,637 people in the USA 1996 ¹
• Uveitis: 2,300,000 people suffer uveitis in the US (Research to Prevent Blindness, NISE, NSF)
• Rasmussen's Encephalitis: rare
• Pfeiffer syndrome: 1 per 100,000 people suffer from Pfeiffer syndrome, Genetics Home Reference website
• Aicardi syndrome: rare
• Osteogenesis imperfecta Type I: 3-4 per 100,000 people are affected by osteogenesis imperfecta type I worldwide, Genetics Home Reference website
• Amyotrophic lateral sclerosis, familial type 2: familial amyotrophic lateral sclerosis type 2 has been reported in only a few families, Genetics Home Reference website
• Amyotrophic lateral sclerosis, familial type 4: familial amyotrophic lateral sclerosis type 4 has been reported in only a few families, Genetics Home Reference website
• Amyotrophic lateral sclerosis, familial type 8: familial amyotrophic lateral sclerosis type 4 has been reported in only a few families, Genetics Home Reference website
• Amyotrophic lateral sclerosis, familial: 10% of all cases of amyotrophic lateral sclerosis are familial, Genetics Home Reference website
• Amyotrophic lateral sclerosis type 1: 3% of sporadic cases of amyotrophic lateral sclerosis are type 1, Genetics Home Reference website
• Osteogenesis imperfecta type IIII: 1-2 per 100,000 people are affected by osteogenesis imperfecta type IIII worldwide, Genetics Home Reference website
• Osteogenesis imperfecta type IV: 3-4 per 100,000 people are affected by osteogenesis imperfecta type IV worldwide, Genetics Home Reference website
• Agenesis of the corpus callosum: rare
• Empty Sella Syndrome: rare
• Hydranencephaly: rare
• Mobius syndrome: rare
• Squint: 7,500,000 people suffer from strabismus or cross eyes in the US (Research to Prevent Blindness, NISE, NSF)
• Cold sores: estimated 50 to 80% of Americans have HSV-1
• Edwards Syndrome: 1 per 5,000 - 6,000 newborns are affected by Trisomy 18, Genetics Home Reference website
• Red-green color vision defects: estimated 0.5% of females of Northern European ancestry suffer from red-green color vision defects, Genetics Home Reference website
• Blue-yellow color vision defects: estimated 1 per 10,000 people suffer from blue-yellow color vision defects worldwide, Genetics Home Reference website
• Cockayne syndrome: estimated less than 1 per 100,000 people are affected by Cockayne syndrome, Genetics Home Reference website
• Achromatopsia type 1: estimated 1 per 30,000 people suffer from complete achromatopsia, Genetics Home Reference website
• Hallervorden-Spatz disease: rare
• Porencephaly: extremely rare
• Noonan Syndrome: estimated 1 per 1,000 - 2,500 people are affected by Noonan syndrome, Genetics Home Reference website
• Waardenburg syndrome: estimated 1 per 10,000 - 20,000 people suffer from Waardenburg syndrome, Genetics Home Reference website
• Oculocutaneous albinism: estimated 1 per 20,000 people suffer from oculocutaneous albinism, Genetic Home Reference website
• Rubinstein-Taybi Syndrome: estimated 1 per 100,000 - 125,000 newborns suffer from Rubinstein-Taybi syndrome, Genetics Home Reference website
• Dentinogenesis: estimated 1 per 6,000 - 8,000 people suffer from dentinogenesis imperfecta, Genetics Home Reference website
• Duane-radial ray syndrome: only a few cases of Duane-radial ray syndrome have been reported, Genetics Home Reference website
• Cerebral cavernous malformations: 0.5% of people suffer from cerebral cavernous malformations worldwide, Genetics Home Reference website
• Cornelia de Lange Syndrome: estimated 1 per 10,000 - 30,000 newborns suffer from Cornelia de Lange syndrome, Genetics Home Reference website
• Crouzon Syndrome: 16 million newborns suffer from Crouzon syndrome, Genetics Home Reference website
• Crouzonodermoskeletal syndrome: 1 per 1 million people are affected by Crouzonodermoskeletal syndrome, Genetics Home Reference website
• Chromosome 22q11.2 deletion syndrome: estimated 1 per 4,000 newborns are affected by chromosome 22q11.2 deletion syndrome, Genetics Home Reference website
• Zellweger Syndrome: rare
• Cri-du-chat syndrome: 1 per 200,000-500,000 newborns are affected by Cri-du-chat syndrome, Genetics Home Reference website
• Fragile-X Syndrome: approximately 1 per 8,000 females suffer from fragile X syndrome, Genetics Home Reference website
• Machado-Joseph Disease: rare
• Kearns-Sayre Syndrome: rare
• Binswanger's Disease: rare
• Canavan disease: 1 per 6,400 - 13,500 people of Ashkenazi Jewish heritage suffer from Canavan disease, Genetics Home Reference website
• Androgenetic alopecia: estimated 35 million men suffer from androgenetic alopecia in the US, Genetics Home Reference website
• Presbycusis: 30-35% over 65 have some hearing loss, 40-50% over 70.
• Pseudotumor Cerebri: about 1-2 people per 100,000 population have benign intracranial hypertension in the US (Association for Spina Bifida and Hydrocephalus)
• Pierre-Robin syndrome with fetal chondrodysplasia: only a few cases of Weissenbacher-Zweymuller syndrome have been reported worldwide, Genetics Home Reference website
• Oculocutaneous tyrosinemia: 1 per 250,000 people suffer from tyrosinemia type 2, Genetics Home Reference website
• Otospondylomegaepiphyseal dysplasia: only a few families have been reported with otospondylomegaepiphyseal dysplasia, Genetics Home Reference website
• Nonsyndromic deafness: 70-80% of cases of congenital hearing loss are not associated with any syndrome in the US, Genetics Home Reference website
• Ménière's disease: about 10,000 people in Australia
• Otosclerosis: as many as 10% of Caucasians have the condition but most do not get symptoms; about 1 in 100 cases actually lose hearing from otosclerosis
• Alport Syndrome: 1 per 50,000 newborns suffer from Alport syndrome, Genetics Home Reference website
• Amelogenesis Imperfecta: estimated 1 per 14,000 people suffer from amelogenesis imperfecta in the US, Genetics Home Reference website
• Leber hereditary optic neuropathy: 1 per 30,000 - 50,000 people suffer from Leber hereditary optic neuropathy in northeast England and Finland, Genetics Home Reference website
• Coffin-Lowry syndrome: estimated 7 per 100,000 people have Coffin-Lowry syndrome in western Europe and North America, Genetics Home Reference website
• Fahr's Syndrome: rare
• Subacute Sclerosing Panencephalitis: rare - because of the rarity of measles due to vaccination programs.
• Stickler Syndrome: estimated 1 per 7,500 - 9,000 newborns suffer from Stickler syndrome, Genetics Home Reference website
• Moyamoya Disease: rare
• Parry Romberg Syndrome: rare
• Septo-Optic Dysplasia: rare
• Soto's Syndrome: rare
• Williams Syndrome: estimated 1 per 7,500 - 20,000 people suffer from Williams syndrome, Genetics Home Reference website
• Apert syndrome: 1 per 100,000 people suffer from Apert syndrome, Genetics Home Reference website
• Cadasil: about 400 people have been diagnosed with CADASIL worldwide, Genetics Home Reference website
• Smith-Magenis Syndrome: 1 per 15,000 undiagnosed and diagnosed people are affected by Smith-Magenis syndrome worldwide , Genetics Home Reference website
• Treacher-Collins Syndrome: estimated 1 per 50,000 people suffer from Treacher Collins syndrome, Genetics Home Reference website
• Bloom Syndrome: 1 per 48,000 people of Ashkenazi Jewish descent suffer from Bloom syndrome, Genetics Home Reference website
• Thanatophoric dysplasia: 1 per 20,000 - 50,000 newborns are affected by Thanatophoric dysplasia, Genetics Home Reference website
• Klinefelter syndrome variant: 1 per 50,000 males are affected by Klinefelter syndrome variants, Genetics Home Reference website
• Strudwick syndrome: only a few cases of the condition have been reported, Genetics Home Reference website
• Costello syndrome: only about 250 cases of Costello syndrome has been reported worldwide, Genetics Home Reference website
• Muenke Syndrome: estimated 1 per 30,000 newborns suffer from Muenke syndrome, Genetics Home Reference website
• more types of Head Conditions...»

Incidence of types of Head Conditions:

For details see incidence of types of Head Conditions analysis; summary of available incidence by type data:

• Common Headache: 90% approximately; almost everyone gets some each year.
• Microcephaly: 1.02 per 10,000 births in the UK 2002 for microcephaly (University of Ulster, 2003)
• Skull fracture: 711 annual cases in Victoria 1996 (DHS-VIC)
• Eye cancer: 2,200 annual cases (SEER 2002 estimate: eye and orbit)
• Brain cancer: 17,000 annual cases in USA (SEER 2002 estimate: brain and other nervous system)
• Oral cancer: 28,900 annual cases (SEER 2002 estimate)
• Dental caries: 2,534,161 annual cases in Victoria 1996 (DHS-VIC)
• Edentulism: 11,429 annual cases in Victoria 1996 (DHS-VIC)
• Periodontitis: 94,482 annual cases in Victoria 1996 (DHS-VIC)
• Age-related macular degeneration: 200,000 people develop neovascular age-related macular degeneration each year in the US (Research to Prevent Blindness, NISE, NSF)
• Diabetic Retinopathy: 65,000 diabetics develop proliferative retinopathy, the most sight-threatening stage in the US (Research to Prevent Blindness, NISE, NSF)
• Cataracts: 400,000 new cases of cataract occur each year in the US (Research to Prevent Blindness, NISE, NSF)
• Tongue Cancer: 7,320 new cases for tongue cancer in the US 2004 (Cancer Facts and Figures, American Cancer Society, 2004)
• Mouth cancer: 10,080 new cases for mouth cancer in the US 2004 (Cancer Facts and Figures, American Cancer Society, 2004)
• Ocular Herpes: 50,000 new/recurrent cases per year, 25% have stromal keratitis
• Meningitis: approximately 25,000 cases of bacterial meningitis annually in USA; 206 annual cases in Victoria 1996 (DHS-VIC)
• Pneumococcal meningitis: about 1 to 2 per 100,000 in the USA
• Japanese encephalitis: 1 case annually in USA (DVBID)
• Chronic Sinusitis: 34.9 million cases per year in the USA 1994 (US Government Statistics)
• Encephalitis, California serogroup viral: 70 annual cases notified in USA 1999 (MMWR 1999)
• Eastern equine encephalitis: 5 annual cases notified in USA 1999 (MMWR 1999)
• St. Louis encephalitis: 4 annual cases notified in USA 1999 (MMWR 1999)
• Western equine encephalitis: 1 annual cases notified in USA 1999 (MMWR 1999)
• Retinoblastoma: estimated 1 per 250 children are diagnosed with retinoblastomas each year, Genetics Home Reference website
• Amyotrophic lateral sclerosis: estimated 5,000 people are diagnosed with amyotrophic lateral sclerosis in the US, Genetics Home Reference website
• Encephaloceles: 1.7 per 10,000 births in the UK 2002 for encephalocele (University of Ulster, 2003)
• Accidental Eye Injury: 16,413 annual cases in Victoria 1996 (DHS-VIC)
• Dementia: 6,175 annual cases in Victora 1996 (DHS-VIC)
• Cerebral Palsy: 2 to 2.5 per 1,000 births (FMC)
• Brain tumor, adult: estimated 20,500 new cases of brain cancer will be diagnosed in the US in 2007, National Cancer Institute website
• Anencephaly: less than 4,000 cases (the rate for spina bifida and anencephaly, NWHIC)
• Holoprosencephaly: 2.38 per 10,000 births in the UK 2002 for arhinencephaly/holprosencephaly (University of Ulster, 2003)
• Cleft palate: about 1 in 700 births
• Mild Traumatic Brain Injury: Estimated 1.4 million MTBI injuries per year in the USA (CDC)
• Cryptococcal Meningitis: about 5 per million
• Edwards Syndrome: 1-in-3000 approximately.
• Hydrocephalus: 6.46 per 10,000 births in the UK 2002 for hydrocephaly (University of Ulster, 2003)
• Middle ear infection: 7 million annually
• Viral meningitis: 8,932 new cases in America 1995 (Meningitis Foundation of America, CDC, 1994)
• Prion disease: approximately 300 cases of prion disease are diagnosed in the US each year, Genetics Home Reference website
• Velocardiofacial syndrome: 1-in-3000 approximately.
• Down Syndrome: 1-in-800 overall births
• Patau syndrome: 1-in-5000 approximately.
• Fragile-X Syndrome: about 1 in 1500 males².
• Soto's Syndrome: estimated 1 per 5,000 newborns have Sotos syndrome which includes reported cases and undiagnosed cases, Genetics Home Reference website
• more types of Head Conditions...»

About prevalence and incidence statistics:

The term 'prevalence' of Head Conditions usually refers to the estimated population of people who are managing Head Conditions at any given time. The term 'incidence' of Head Conditions refers to the annual diagnosis rate, or the number of new cases of Head Conditions diagnosed each year. Hence, these two statistics types can differ: a short-lived disease like flu can have high annual incidence but low prevalence, but a life-long disease like diabetes has a low annual incidence but high prevalence. For more information see about prevalence and incidence statistics.

Footnotes:
1. Rose and Mackay, 1998, The Autoimmune Diseases, Third Edition
2. Pathophysiology of Disease, Stephen J. McPhee, Vishwanash R. Lingappa, Willim F. Ganong, Jack D. Lang, Prentice Hall, 1995

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