Short answer · Medically reviewed summary · Last updated: 2026-05-08

Acrodysostosis is a very rare genetic disorder characterized primarily by skeletal abnormalities, including short stature, shortened hands and feet (brachydactyly), and distinct facial features. It is caused by specific gene mutations that disrupt the body's hormonal signaling pathways, particularly those related to parathyroid hormone and thyroid-stimulating hormone. What are the primary symptoms of Acrodysostosis? Individuals with Acrodysostosis often present with a specific pattern of physical findings.

What is Acrodysostosis

Name: What is Acrodysostosis
Creator: DiseaseMaps Editorial Team
Published: 2016-06-16UTC12:14:53.0000000

What is Acrodysostosis? Plain-language, medically reviewed definition plus the lived reality told by patients.

Acrodysostosis is a very rare genetic disorder characterized primarily by skeletal abnormalities, including short stature, shortened hands and feet (brachydactyly), and distinct facial features. It is caused by specific gene mutations that disrupt the body's hormonal signaling pathways, particularly those related to parathyroid hormone and thyroid-stimulating hormone.

What are the primary symptoms of Acrodysostosis?

Individuals with Acrodysostosis often present with a specific pattern of physical findings. While symptoms vary by individual, the most common clinical features include:

Severe shortening of the bones in the hands and feet (brachydactyly).

A short, upturned nose and a flattened nasal bridge (nasal hypoplasia).

Short stature and a relatively short neck.

Hormonal resistance, which may lead to issues with growth or metabolic regulation.

Potential cognitive impairment or developmental delays in some, though not all, patients.

What causes Acrodysostosis and how is it classified?

Acrodysostosis is classified into two main types based on the underlying genetic cause: Type 1, associated with mutations in the PRKAR1A gene, and Type 2, associated with mutations in the PDE4D gene. Both types involve the cAMP signaling pathway, which is essential for bone development and hormonal response. Because these mutations generally occur de novo (spontaneously) in an individual, Acrodysostosis is rarely inherited from a parent.

How rare is Acrodysostosis?

Acrodysostosis is an extremely rare condition with an unknown exact prevalence. Fewer than 100 cases have been documented in global medical literature. Due to its rarity, it is often underdiagnosed or misdiagnosed as other skeletal dysplasias. Currently, 11 people with Acrodysostosis have joined the DiseaseMaps.org community, providing a vital space for patients and families to share lived experiences.

How is Acrodysostosis distinguished from other conditions?

Unlike other skeletal dysplasias, Acrodysostosis is specifically identified by the combination of peripheral skeletal shortening and hormone resistance. Clinicians differentiate it from Albright hereditary osteodystrophy by evaluating the specific hormonal profile and the distinct facial characteristics unique to this condition.