Pinprick-like red dots on the skin with protruding skin may be bleeding dots or pigmented nevi, and may also occur under the influence of allergies and dermatological conditions that may lead to this condition feature. Therefore, in clinical practice, if you find small red dots like pins and needles on the skin with protruding skin, you should not consider them as leukemia and need to receive further observation and treatment to clarify the specific condition, but in general, this phenomenon is not a clinical manifestation of leukemia, so the risk level is extremely low. Leukemia is mainly characterized by the presence of bleeding spots on the skin and mucous membranes, excessive bleeding and bleeding gums, which are caused by a decrease in platelets. If the patient has leukemia, the skin will have specific skin lesions, the patient will have significant bleeding on the mucous membrane of the skin surface, and the patient will have other symptoms that are more pronounced and not just skin conditions.