What is the most likely cause of the fingertip erythema, swelling, and tenderness?
A. Digital gangrene
B. Digital ulcer with secondary infection
C. Contact dermatitis
D. Venous thrombosis
What is the primary mechanism by which nifedipine helps in Raynaud’s phenomenon?
A. Enhances oxygenation of digital tissues
B. Suppresses autoimmune inflammation
C. Dilates peripheral blood vessels by blocking calcium influx
D. Increases red blood cell flexibility
1. B
2. C
1. None is correct
2. C
B
C
1.B
2.C
1. B
2. C
1. B
2. C