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Pachydermodactyly is a digital fibromatosis, characterized by asymptomatic, non-inflammatory fusiform swelling of proximal interphalangeal (PIP) joints of fingers.
Although pachydermodactyly is a rare and benign dermatological pathology, recognizing this condition is very important.
The case was referred to the rheumatologist, with suspected pachydermodactyly There was not any bone or joint pathology on the hand X-ray (Figure 5).
Pachydermodactyly was first described in 1973 by Bazex as fibromatosis and hyperplastic dermis of digits II-IV (4).
The exact etiology of pachydermodactyly is unclear, but repetitive mechanical skin stimulation has been suggested as a triggering factor (3).
To the best of our knowledge, there is only a single report in the literature describing dermoscopic features of pachydermodactyly as a cobblestone pattern and whitish scale corresponding to papillomatosis and hyperkeratosis (10).
Pachydermodactyly is a rare, benign, acquired digital fibromatosis characterized by asymptomatic, progressive swelling of periarticular soft tissues of the fingers without joint involvement.
A diagnosis of pachydermodactyly was provided and dermatology was consulted for further management.
The patient was then referred to dermatology for the management of pachydermodactyly. Given the patient's concern about the appearance of her hands, she was offered treatment with hydroxychloroquine.
Pachydermodactyly is an uncommon type of digital fibromatosis.
Here, we have described 2 additional cases, who were initially referred for possible JIA prior to clinical and histopathological confirmation of pachydermodactyly. JIA is also a relatively rare condition in which rheumatoid nodules may develop over MCP and PIP joints in polyarticular disease.
Pachydermodactyly is a rare condition which can mimic the appearance of arthritis.