Palmar erythema

The symmetrical redness or pinkness on the palms of the hands. 

Causes:

• Pregnancy: High estrogen levels change blood flow

• Liver failure: Cirrhosis or hepatitis causes impaired estrogen metabolism

• Autoimmune diseases: Rheumatoid arthritis

• Hyperthyroidism: Increased peripheral vasodilation

• Medications and lifestyle: Topiramate, albuterol, heavy smoking, mercury exposure

• Chronic pulmonary disease: COPD, interstitial lung disease

• Hematologic disorders (rare)