Which of the following is typically the earliest clinical manifestation of systemic sclerosis in the majority of patients?

Explanation

Raynaud's phenomenon is the initial symptom in approximately 90-95% of patients with systemic sclerosis, often preceding other manifestations by months or even years. It is characterized by episodic digital ischemia triggered by cold or stress. Skin thickening of the trunk is more characteristic of diffuse cutaneous systemic sclerosis and usually develops later. Pulmonary hypertension and scleroderma renal crisis are serious complications that typically occur later in the disease course, not as initial manifestations.