Clinical Reasoning: A 32-Year-Old Man With Painless Bilateral Shoulder Girdle Weakness and Atrophy

Area of Science:

• Neurology
• Clinical Case Study

Background:

• Progressive, asymmetric proximal weakness in upper limbs is a challenging clinical presentation.
• Gynecomastia and specific muscle group involvement suggest a complex underlying etiology.

Purpose of the Study:

• To present a unique case of bibrachial weakness in a young adult.
• To outline the diagnostic and therapeutic considerations for this condition.

Main Methods:

• Detailed clinical examination including neurological assessment.
• Review of patient history, including a remote traumatic event.
• Discussion of differential diagnoses and investigations.

Main Results:

• The patient exhibited significant muscle wasting and weakness in bilateral upper limbs, predominantly affecting proximal muscles.
• Sensory deficits were noted in the left C5-C8 dermatomes.
• Depressed upper limb reflexes contrasted with normal lower limb reflexes.

Conclusions:

• Bibrachial weakness requires a comprehensive diagnostic workup to identify the underlying cause.
• Management strategies should be tailored to the specific etiology identified.