A 28-year-old male presents with fatigue, frequent nosebleeds, and red spots on his skin. His blood test results show a low platelet count, but his red and white blood cell counts are normal. What are the potential diagnoses and next steps?
The symptoms of fatigue, nosebleeds, and skin changes (potentially petechiae), together with the low platelet count, could be indicative of a platelet disorder such as immune thrombocytopenic purpura (ITP) or thrombotic thrombocytopenic purpura (TTP). Other considerations include aplastic anemia, leukemia, or medication-induced thrombocytopenia. Further testing should include peripheral blood smear, coagulation tests, and possible bone marrow biopsy depending on these results.