Which constellation is considered a red flag in suspected systemic sclerosis?

• A. Raynaud's syndrome
• B. Puffy fingers + anti-Scl70 positivity
• C. Raynaud's syndrome + dyspnea
• D. Raynaud's phenomenon + puffy fingers + ANA positivity

Answer: (D)

Recognizing a high-risk constellation for systemic sclerosis involves seeing Raynaud's phenomenon together with puffy fingers and ANA positivity. Raynaud's phenomenon reflects the vascular vasospasm that often starts systemic sclerosis; puffy fingers signal the early edema and soft-tissue changes that precede fibrosis; ANA positivity shows the autoimmune backdrop common in this disease. When these three features appear together, they strongly point toward systemic sclerosis rather than a single, nonspecific finding like Raynaud's alone. Such a pattern should prompt early rheumatologic evaluation and screening for organ involvement (lung, heart, kidneys) because systemic sclerosis can progress to serious complications.