Cutaneous leukemia is characterized by red or purple slightly elevated papules or nodules; patients with cutaneous myelofibrosis may also develop red or purple slightly elevated papules or nodules. Cutaneous leukemia is a malignancy of the white blood cells in the blood and is characterized by diffuse infiltration of the bone marrow by immature leukocytes and abnormal numbers of immature leukocytes in the blood. In addition, immature leukocytes often infiltrate extensively the liver, spleen, lymph nodes and other organs, including the skin. Cutaneous myelofibrosis, also known as cutaneous extramedullary hematopoiesis, is a chronic myeloproliferative disease. So what are the preventive measures for red or purple, slightly elevated papules or nodules? Here is a brief introduction for you. 1, early to bed and early to rise, exercise the body. The lack of sleep will reduce the body’s immune function, but also easy to excite the fire, incurring external internal injuries. 2, keep a calm state of mind. Spring avoid anger, do not be too impatient, to maintain a calm state of mind from time to time. 3, quit smoking, less alcohol and coffee. Smoking is most likely to damage the surface barrier of the respiratory tract and induce disease attacks. Tobacco, alcohol and coffee will stimulate nervous excitement, some people want to use to “eliminate tension and fatigue”, but in fact weaken the body’s resistance to disease. 4. Stay away from allergens and crowded places. 5, diet should be light, nutritious and easy to digest, and eat less greasy fried and spicy stimulating food.