Which symptom is least likely to be associated with low platelets in a leukemia patient?

In the context of leukemia, low platelet counts, or thrombocytopenia, can lead to a few hallmark symptoms primarily related to bleeding and bruising. Ecchymosis, bleeding petechiae, and bruising are all direct manifestations of reduced platelet function or quantity, resulting in the body's inability to properly form clots.

Infection, while a serious concern in leukemia patients due to the potential for neutropenia (low white blood cell count), is not directly tied to low platelet levels. Instead, infections result from immunosuppression rather than bleeding or bruising characteristics. Therefore, while infection is indeed a common complication in leukemia patients, it does not arise as a symptom from low platelet counts.

In summary, when considering the symptoms associated with low platelets, bruising and small blood spots are clear manifestations, while infection is not a direct outcome of platelets being low.