Presenting History
In children presenting with acute thrombocytopenia and purpura, establish the primary hemostatic nature of the bleeding, verify the antecedent viral illness, and rule out bone marrow failure or systemic disease.
- Cutaneous Bleeding Manifestations:
- Abrupt onset of pinpoint, flat, non-blanching red-purple spots (petechiae) in a previously healthy child.
- Appearance of larger purple-blue bruises (ecchymoses) following minimal or no trauma.
- Distribution: Lower limbs, trunk, upper extremities, face.
- Mucosal Bleeding ("Wet Purpura"):
- Spontaneous nosebleeds (epistaxis) and duration/volume.
- Bleeding from gums while brushing teeth or eating.
- Blood blisters on the tongue or buccal mucosa (oral hemorrhagic bullae).
- Subconjunctival hemorrhages.
- Antecedent Viral Illness / Trigger:
- History of an upper respiratory tract infection, viral exanthem, gastroenteritis, or MMR vaccination 1 to 4 weeks prior.
- Assessment of Danger Signs (Life-Threatening Bleeding):
- Severe persistent headache, vomiting, drowsiness, or seizures (intracranial hemorrhage).
- Vomiting blood (hematemesis), black stools (melena), or gross hematuria.
Negative History (3C 1D Framework)
| Category | Pertinent Negative Question | Rationale / Significance |
|---|---|---|
| Causes | Bone Marrow Failure / Leukemia: No history of bone pain, limping, fever, weight loss, or pallor. Drugs / Toxins: No history of antiepileptics, quinine, sulfonamides, or heparin. Inherited Thrombocytopenia: No lifelong bleeding, no chronic eczema, no recurrent infections. | Critical negative: leukemia presents with systemic symptoms, bone pain, and multiple cytopenias. Rules out drug-induced immune thrombocytopenia. Rules out Wiskott-Aldrich syndrome and TAR syndrome. |
| Complaints (Differentiating) | Coagulation Defects (Hemophilia): No history of deep joint swellings (hemarthroses) or intramuscular hematomas. Palpable Purpura (HSP): Purpura is completely flat and non-palpable (HSP purpura is distinctly raised/palpable). | Deep tissue bleeding indicates coagulation factor deficiency, not platelet disorders. Differentiates IgA vasculitis (normal platelet count). |
| Complications | Intracranial Hemorrhage: No history of altered sensorium, projectile vomiting, or focal neurological deficits. Severe Anemia: No history of breathlessness, extreme fatigue, or syncope. | Leading cause of mortality in childhood ITP (incidence <0.5%). Assesses hemodynamic consequence of massive mucosal hemorrhage. |
| Differentials | TTP / HUS: No history of bloody diarrhea, oliguria, jaundice, or microangiopathic hemolysis. Aplastic Anemia: No history of recurrent bacterial infections or severe anemia. Systemic Lupus Erythematosus: No history of photosensitivity, malar rash, or arthritis. | Differentiates microangiopathic hemolytic thrombocytopenias. Aplastic anemia affects all 3 cell lines; ITP is isolated thrombocytopenia. Rules out secondary autoimmune ITP in SLE. |
Other Relevant History
- Past Medical History: Confirm this is the first episode; inquire about prior platelet counts or surgical bleeding.
- Family History & Pedigree: Three-generation pedigree; assess family history of bleeding or autoimmune disorders.
- Immunization History: Check timing of recent live vaccines (especially MMR).
History Summary
"Master/Miss `Patient Name`, a `Age` old `male/female` child, `Birth Order` born of a `consanguineous/non-consanguineous` marriage from `City, State`, presented with abrupt appearance of pinpoint petechiae, ecchymoses, and `epistaxis / oral blood blisters` for `Duration in days` following a viral illness `1-3 weeks` ago, without history of fever, bone pain, limping, constitutional symptoms, joint swellings, or gross internal bleeding.
In view of the acute onset of isolated cutaneo-mucosal purpura in a thriving child following a viral illness, I would like to consider a provisional diagnosis of Newly Diagnosed Immune Thrombocytopenia (Acute ITP), with `Mild Cutaneous (Grade 1-2) / Moderate Mucosal (Grade 3) / Severe (Grade 4)` bleeding, without clinical evidence of intracranial hemorrhage or secondary bone marrow failure."
General & Head-to-Toe Examination
- Child Behavioral State Assessment:
- Document Prechtl state (e.g., Prechtl State 3: alert, active, cheerful, playful, completely non-toxic).
- Vitals & Anthropometry:
- HR, RR, BP, temperature; weight and height Z-scores (normal growth).
- Bleeding Manifestations:
- Cutaneous Bleeding: Describe petechiae, purpura, and ecchymoses (size, distribution, non-palpable, non-tender).
- Mucosal Bleeding (Wet Purpura): Inspect oral cavity for hemorrhagic bullae on buccal mucosa/tongue, nasal cavity for clots/oozing, and sclera for subconjunctival hemorrhage.
- Paramount Negative Physical Findings:
- Pallor: Absent (mucosa pink).
- Lymphadenopathy: Completely absent in all nodal basins.
- Bony Tenderness: No tenderness over sternum, ribs, spine, or long bones.
- Icterus, Cyanosis, Clubbing, Edema: Absent.
Systemic Examination
Abdomen
- Inspection: Normal contour.
- Palpation: Soft, non-tender; LIVER NOT ENLARGED; SPLEEN NOT PALPABLE Absence of splenomegaly is mandatory; palpable spleen strongly contradicts ITP and mandates bone marrow examination!
- Percussion & Auscultation: Resonant, normal bowel sounds.
Central Nervous System (CNS)
- Conscious, oriented, active; cranial nerves intact; motor exam normal; meningeal signs absent; fundoscopy: clear discs, NO retinal hemorrhages.
Final Summary & Diagnosis
"A `Age` old `male/female` child presenting with abrupt onset of isolated petechiae, purpura, and buccal hemorrhagic bullae following an antecedent viral infection, with examination confirming an active, well-appearing child with cutaneo-mucosal bleeding, normal hemoglobin, absence of pallor, absence of lymphadenopathy, absence of bony tenderness, and crucially, absence of splenomegaly or hepatomegaly.
My final diagnosis is Newly Diagnosed Immune Thrombocytopenia (Acute ITP), presenting with moderate mucosal bleeding (Buchanan Bleeding Scale Grade 3), without features of bone marrow failure or intracranial hemorrhage."