What causes low WBC count with red dots on the arms?
Patient: Over the last month my white blood cell count has been tested twice and they have been 129 and 123 respectively.  I've been told that is low.  I also have small red dots on my forearms.  I read it could be a vitamin D deficiency so I have started taking vitamins again.  I read it could also be a blood disorder.  What tests could be run to verify what it is? Doctor: Hi,Thanks for asking.Based on your query, my opinion is as follows.1. If WBC count is low along with red dot on arms, which suggests of possible thrombocytopenia, possible vit B12 deficiency needs to be thought of.2. It could be possible pancytopenia. Get a complete hemogram for confirmation. Differential count with peripheral will evaluate any blood disorder.3. Vit B12 assay can help in confirmation of deficiency. Also associated macrocytic anemia, will be seen. 4. Other tests that would be needed are bleeding time, prothrombin time and partial thromboplastin time and bone marrow biopsy may also be necessary. Based on test results, further opinion possible.Hope it helps.Any further queries, happy to help again.