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Differential Diagnosis

  • Single most likely diagnosis
    • Thoracic outlet syndrome: This condition is the most likely cause of the patient's symptoms, given the positive Adson test result, which is often used to diagnose thoracic outlet syndrome. The patient's symptoms of hand weakness and numbness, particularly worsening in the morning, are also consistent with this diagnosis. The patient's recent increase in upper body workout as a weightlifter could have exacerbated the condition.
  • Other Likely diagnoses
    • Acute brachial plexus neuropathy: Although less likely than thoracic outlet syndrome, acute brachial plexus neuropathy could explain the patient's symptoms of hand weakness and numbness. The recent increase in physical activity could be a contributing factor.
    • C5 radiculopathy: This condition could also cause arm weakness and numbness, but it might not fully explain the positive Adson test result. However, it remains a possibility, especially if the patient has a history of neck strain or injury.
  • Do Not Miss diagnoses
    • Erb palsy: Although Erb palsy typically presents with a specific pattern of arm weakness (primarily affecting the muscles of the upper arm and forearm), it is essential to consider this diagnosis due to its potential for long-term disability. However, the patient's symptoms do not perfectly align with Erb palsy.
    • Klumpke palsy: This condition affects the lower brachial plexus and could cause hand weakness and numbness. While it is less likely, given the patient's symptoms and the positive Adson test result, it is crucial to consider Klumpke palsy to avoid missing a potentially treatable condition.
  • Rare diagnoses
    • Other rare neuropathies or musculoskeletal conditions: There are various rare conditions that could cause the patient's symptoms, such as peripheral nerve tumors or rare muscular dystrophies. Although these conditions are unlikely, a thorough diagnostic workup may be necessary to rule them out if the patient's symptoms do not respond to treatment for the more likely conditions.

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This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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