Red palms can be a symptom of hepatitis, urticaria, asthma, eczema and other diseases. 1. Hepatitis: if hepatitis, at this time due to liver cell damage, estrogen inactivation is reduced, estrogen increases to stimulate skin vasodilatation, so red palms. 2. Urticaria: when the patient is allergic to pollen and other substances, this time there will be skin vasodilatation, there will also be the phenomenon of red palms. 3. Asthma: in the case of asthma, the lack of oxygen in the blood leads to a purplish red color on the palms. 4. Eczema: if the patient has eczema, due to the stimulation of inflammatory factors can lead to the expansion of blood vessels, resulting in redness of the palms. Finally, the phenomenon of red palms, please go to the hospital in time to check the diagnosis and give symptomatic treatment.