Fever in the left hand generally does not require too much stress and is usually often seen in the following three conditions. The first is that the blood circulation in the body is better and the heart is constantly transporting oxygen and nutrients to the surrounding area while also transferring heat to the distal extremities, which leads to a feverish hand. The second condition is seen in eczema of the hands, which is often accompanied by itching of the hands and sometimes by scattered red rashes or papules, often seen in children, associated with exposure to certain irritants, and also in adults. The third condition is phytodysfunction, which is often accompanied by excessive sweating in other parts of the body, irritability, poor sleep and other discomforts. In addition, you can also consult an herbalist to help treat the condition.