Which of the following best defines a syndrome?

• A. A combination of symptoms and physical findings attributed to a specific cause
• B. Impairment of a specific structure of the body producing symptoms
• C. Impairment of a specific function of the body producing physical findings
• D. A combination of symptoms and physical findings not easily attributable to a specific cause

Answer: (D)

A syndrome is a recognizable pattern of signs and symptoms that tend to occur together, defining a condition even when there isn’t a single clear cause identified. The best choice captures this idea by describing a combination of symptoms and physical findings that isn’t easily attributable to one specific cause. That emphasis on the co-occurring pattern, rather than a single etiologic factor, is what distinguishes a syndrome from other concepts. The other descriptions focus on a particular cause, or on damage to a structure or a specific function, which describes underlying pathology rather than the grouped presentation that characterizes a syndrome.