Rapid-Onset Diffuse Skeletal Fluorosis from Inhalant Abuse: A Case Report

Area of Science:

• Medical Case Study
• Toxicology
• Orthopedics

Background:

• Diffuse skeletal fluorosis is a rare condition characterized by excessive fluoride accumulation in bones.
• It can lead to severe joint pain, stiffness, and osteosclerosis.
• Unexplained bone abnormalities warrant a thorough investigation into potential environmental or substance exposures.

Purpose of the Study:

• To report the first known case of diffuse skeletal fluorosis attributed to the inhalant abuse of 1,1-difluoroethane.
• To emphasize the diagnostic considerations for skeletal fluorosis in clinical practice.
• To raise awareness about the potential skeletal toxicity of certain inhalant substances.

Main Methods:

• A case report of a 30-year-old male with severe left hip pain and stiffness.
• Radiographic evaluation revealing diffuse osteosclerosis and heterotopic bone formation.
• Confirmation of diagnosis through elevated serum fluoride levels following disclosure of inhalant abuse.

Main Results:

• The patient presented with near ankylosis of the left hip due to osteosclerosis and heterotopic ossification.
• Successful joint-preserving surgery improved the patient's range of motion.
• Diagnosis of diffuse skeletal fluorosis was confirmed via laboratory findings.

Conclusions:

• This is the first reported instance of diffuse skeletal fluorosis linked to 1,1-difluoroethane inhalant abuse.
• Skeletal fluorosis, though uncommon in the U.S., should be considered in the differential diagnosis of unexplained osteosclerosis and joint pain.
• Inhalant abuse can lead to severe, debilitating skeletal conditions.