Idiopathic hypertrophic osteoarthropathy without pachyderma

Area of Science:

• Endocrinology
• Genetics
• Dermatology

Background:

• Hypertrophic osteoarthropathy (HO) is a rare disorder characterized by bone and joint abnormalities.
• It is classified into secondary HO, commonly associated with bronchogenic carcinoma, and idiopathic HO (IHO).

Observation:

• Idiopathic hypertrophic osteoarthropathy (IHO) can present with or without distinctive skin changes known as pachyderma.
• When IHO is accompanied by pachyderma, the condition is termed pachydermoperiostosis.
• This report details three rare instances of IHO occurring in the absence of pachyderma.

Findings:

• The study focuses on the rare presentation of idiopathic hypertrophic osteoarthropathy without associated pachyderma.
• It describes three distinct cases illustrating this unusual clinical manifestation.
• The findings contribute to a better understanding of the spectrum of idiopathic hypertrophic osteoarthropathy.

Implications:

• These cases expand the known clinical spectrum of idiopathic hypertrophic osteoarthropathy.
• Further research may elucidate the specific genetic or molecular mechanisms underlying IHO without pachyderma.
• Improved diagnostic criteria may arise from understanding these rare presentations.