Hyperostosis
A human skull showing hyperostosis
Specialty	Rheumatology

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.^[1]

Disorders featuring hyperostosis include:^[2]

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

• Diffuse idiopathic skeletal hyperostosis
• Hyperostosis frontalis interna
• Infantile cortical hyperostosis
• Porotic hyperostosis
• SAPHO syndrome

• Stuart-Macadam P (April 1985). "Porotic hyperostosis: representative of a childhood condition". American Journal of Physical Anthropology. 66 (4): 391–8. Bibcode:1985AJPA...66..391S. doi:10.1002/ajpa.1330660407. PMID 3887936.
• Suri D, Dayal D, Singh M (July 2005). "Infantile cortical hyperostosis". Archives of Disease in Childhood. 90 (7): 711. doi:10.1136/adc.2004.065334. PMC 1720499. PMID 15970613.
• Hayem G, Bouchaud-Chabot A, Benali K, et al. (December 1999). "SAPHO syndrome: a long-term follow-up study of 120 cases". Seminars in Arthritis and Rheumatism. 29 (3): 159–71. doi:10.1016/S0049-0172(99)80027-4. PMID 10622680.
• MOORE S, CARR AD (January 1952). "Hyperostosis frontalis interna; two contrasting cases". Journal of the American Medical Association. 148 (3): 199–200. doi:10.1001/jama.1952.62930030004009b. PMID 14880497.

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