What causes purple spots on hands that come and go?

Purple spots on the hands that come and go can be caused by various factors, including bruising from minor trauma, changes in blood circulation, or conditions like purpura, which involves bleeding under the skin. They may also result from certain medications, Allergies, or underlying health issues such as vascular disorders. If the spots are persistent or accompanied by other symptoms, it's advisable to consult a healthcare professional for an accurate diagnosis and appropriate treatment.