hyperostosis

{{Short description|Excessive bone growth}}

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| image = Nervous and mental diseases (1908) (14591670608).jpg

| caption = A human skull showing hyperostosis

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Hyperostosis is an excessive growth of bone. It may lead to exostosis. It occurs in many musculoskeletal disorders and from use of drugs like Isotretinoin.{{Cite journal |last=Ellis |first=Charles N. |last2=Pennes |first2=David R. |last3=Hermann |first3=Richard C. |last4=Blauvelt |first4=Andrew |last5=Martel |first5=William |last6=Voorhees |first6=John J. |date=June 1988 |title=Long-term radiographic follow-up after isotretinoin therapy |url=https://linkinghub.elsevier.com/retrieve/pii/S0190962288701310 |journal=Journal of the American Academy of Dermatology |language=en |volume=18 |issue=6 |pages=1252–1261 |doi=10.1016/S0190-9622(88)70131-0}}

Disorders featuring hyperostosis include:{{Cite web |title=Hyperostosis (Concept Id: C0020492) |url=https://www.ncbi.nlm.nih.gov/medgen/9366 |access-date=2023-11-30 |website=www.ncbi.nlm.nih.gov |language=en}}

• Camurati-Engelmann disease, type 2
• Hypertrophic osteoarthropathy, primary, autosomal recessive, 2
• Melorheostosis
• Tumoral calcinosis, hyperphosphatemic, familial, 1
• Worth disease

File:Meningioma of the sagittal sinus isolated.jpg of the middle third of the sagittal sinus with large hyperostosis]]