What connective tissue disease is characterized by poor circulation and sensitivity to thermal changes?

• A. Scleroderma
• B. Rheumatoid Arthritis
• C. Lupus
• D. Fibromyalgia

Answer: (A)

Scleroderma is a connective tissue disease that is characterized by poor circulation and sensitivity to thermal changes due to abnormalities in the collagen and connective tissue. This condition leads to the thickening and tightening of the skin and the restriction of blood flow, resulting in symptoms such as cold extremities and numbness from impaired circulation. Patients with scleroderma often experience Raynaud's phenomenon, where blood vessels in the fingers and toes constrict excessively in response to cold or stress, exacerbating the sensitivity to thermal changes. These features highlight the vascular complications associated with scleroderma, further confirming it as the correct answer in the context of the question. Other conditions listed may involve pain and inflammation, but they do not primarily feature the specific circulation-related symptoms that are hallmark signs of scleroderma.