Differential Diagnosis for Sore Muscles, Knots, Limited Range of Motion in Shoulders, and Shoulder Subluxations after an Iron Infusion

• Single Most Likely Diagnosis
  • Iron infusion-related side effects: The symptoms could be directly related to the iron infusion, possibly due to an allergic reaction, hypersensitivity, or an idiosyncratic response to the iron formulation. Justification: Iron infusions are known to cause side effects such as muscle pain, joint pain, and allergic reactions in some individuals.
• Other Likely Diagnoses
  • Fibromyalgia: This condition is characterized by widespread muscle pain, tender points, and limited range of motion, which could be exacerbated by the iron infusion. Justification: Fibromyalgia is a common condition that can cause chronic muscle pain and limited mobility.
  • Adhesive capsulitis (frozen shoulder): This condition can cause limited range of motion and pain in the shoulder, which may be unrelated to the iron infusion. Justification: Adhesive capsulitis is a common condition that can cause shoulder pain and limited mobility.
  • Myofascial pain syndrome: This condition is characterized by muscle knots and limited range of motion, which could be contributing to the symptoms. Justification: Myofascial pain syndrome is a common condition that can cause muscle pain and limited mobility.
• Do Not Miss Diagnoses
  • Hemochromatosis: Although unlikely, it is essential to rule out hemochromatosis, a genetic disorder that can cause iron overload, leading to muscle and joint pain. Justification: Hemochromatosis is a potentially life-threatening condition that requires prompt diagnosis and treatment.
  • Osteonecrosis: This condition can cause shoulder pain and limited range of motion, and although rare, it is essential to consider it in the differential diagnosis. Justification: Osteonecrosis is a potentially debilitating condition that requires prompt diagnosis and treatment.
• Rare Diagnoses
  • Eosinophilic fasciitis: This rare condition is characterized by muscle pain, limited range of motion, and eosinophilia, which could be related to the iron infusion. Justification: Eosinophilic fasciitis is a rare condition that can cause muscle pain and limited mobility.
  • Sarcoidosis: This rare condition can cause muscle and joint pain, as well as limited range of motion, which could be contributing to the symptoms. Justification: Sarcoidosis is a rare condition that can cause muscle and joint pain, and although unlikely, it should be considered in the differential diagnosis.