Presenting History
In children presenting with suspected Severe / Cerebral Malaria, elicit the geographic exposure, fever periodicity with chills, neurological deterioration timeline, acidotic breathing, and urinary color changes.
- Fever Periodicity & Chills:
- Has the high fever occurred in paroxysms with teeth-chattering chills, rigors, and profuse drenching sweats?
- Is the pattern tertian (every 48 hours), quartan (every 72 hours), or continuous/irregular (falciparum)?
- Neurological Deterioration (Cerebral Malaria):
- Did the child lapse from drowsiness into an unarousable coma?
- Have there been generalized convulsions ($>2$ episodes in 24 hours)?
- Has the coma persisted for $>1$ hour after the cessation of seizures?
- Acidotic Breathing & Hemoglobinuria:
- Is there rapid, deep, heavy, sighing breathing (lactic acidosis)?
- Has the urine turned dark red, brown, or black like dark tea or cola (Blackwater fever)?
- Extreme Pallor & Jaundice:
- Did chalky pallor and yellow eyes develop rapidly within 48 to 72 hours?
Negative History (3C 1D Framework)
| Category | Pertinent Negative Question | Rationale / Significance |
|---|---|---|
| Causes | Endemic Travel / Residence: Note residence or travel to forested tribal belts within past 4 weeks. Chemoprophylaxis: Inquire regarding antimalarial intake or bed net usage. | Forested hyperendemic belts harbor intense Anopheles fluviatilis/culicifacies transmission. Identifies drug resistance or treatment failure. |
| Complaints (Differentiating) | Bacterial Meningitis: No preceding neck stiffness, photophobia, or purulent CSF. Viral Encephalitis: No seasonal enterovirus / Japanese encephalitis cluster without parasitemia. | Mandatory differentiation: CSF in cerebral malaria is clear with normal cells and glucose. JE lacks falciparum rings or blackwater fever. |
| Complications | Hypoglycemia: Inquire about sudden diaphoresis, hypothermia, or sudden deep coma. Pulmonary Edema: No sudden tachypnea with diffuse crepitations (non-cardiogenic ARDS). Acute Renal Failure: No complete anuria ($<0.5\text{ mL/kg/hr}$). | Parasite glycolysis and quinine-induced hyperinsulinemia cause fatal hypoglycemia. Microvascular sequestration induces non-cardiogenic pulmonary edema. Free hemoglobin and microthrombi induce acute tubular necrosis. |
| Differentials | Diabetic Ketoacidosis: No polyuria/polydipsia; blood glucose is low, not high. Acute Viral Hepatitis: No primary hepatocellular failure without malarial paroxysms. | Differentiates acidotic hyperpnea. Differentiates malarial jaundice from viral hepatitis. |
Other Relevant History
- Family History & Pedigree: Malaria cases in siblings; sickle cell trait or G6PD deficiency history.
- Previous Antimalarial Intake: Inquire regarding oral chloroquine or incomplete artemisinin courses.
History Summary
"Master/Miss `Patient Name`, a `Age` old `male/female` child, `Birth Order` born of a `consanguineous/non-consanguineous` marriage from `City/District, State`, presented with a `Duration in days` history of tertian fever with rigors, acutely complicated over the past 24 hours by unarousable coma, multiple generalized seizures, deep acidotic breathing, dark cola-colored urine (blackwater fever), and rapidly worsening pallor and jaundice, with a history of residence in a hyperendemic forested belt, in the absence of preceding neck rigidity.
In view of the unarousable coma, fever paroxysms, hemoglobinuria, and deep breathing, I would like to consider a provisional diagnosis of Complicated / Severe Malaria (Cerebral Malaria) caused by Plasmodium falciparum, presenting with multi-organ dysfunction, requiring emergency peripheral blood smear, lumbar puncture, and IV Artesunate resuscitation."
General & Head-to-Toe Examination
- Coma Scale Assessment (Mandatory Score):
- Assess Blantyre Coma Score (for children $<5$ years; score $\le 2/5$ diagnostic of coma) OR Glasgow Coma Scale (GCS) ($<8/15$ diagnostic).
- Assess motor response to deep noxious stimulus (localizes vs flexor vs decerebrate posturing).
- Vitals:
- Respiratory Rate & Pattern: Inspect for deep, rapid, sighing Acidotic / Kussmaul-like breathing.
- Heart rate (tachycardia), blood pressure, temperature (high pyrexia).
- General Physical Findings:
- Severe Pallor: Chalky pallor of conjunctiva, tongue, and nail beds (severe malarial anemia).
- Icterus: Yellow discoloration of sclerae and skin (hemolytic and hepatic jaundice).
- Urine Color: Inspect freshly voided or catheterized urine for dark reddish-black "cola" discoloration.
- Fundoscopy (Malarial Retinopathy): Screen for retinal whitening, vessel discoloration, and Roth spots.
Systemic Examination
Central Nervous System (CNS)
- Depth of coma; pupil size and light reactivity; brainstem reflexes; motor tone (bilateral extensor hypertonia common); deep tendon reflexes brisk; bilateral extensor plantars (Babinski positive); neck stiffness absent.
Abdomen
- Palpate for Splenomegaly (measure cm below left costal margin, soft-to-firm consistency); palpate liver span (soft hepatomegaly).
Respiratory & Cardiovascular Systems
- Chest clear bilaterally (rule out pulmonary edema); hyperdynamic precordium with hemic flow murmur.
Final Summary & Diagnosis
"A `Age` old `male/female` child from a malaria-endemic area presenting in unarousable coma (Blantyre Coma Score `Score`/5, GCS `GCS`), multiple seizures, acidotic breathing, severe pallor, icterus, splenomegaly, and dark cola-colored urine (blackwater fever).
My final diagnosis is Severe / Complicated Falciparum Malaria manifesting as Cerebral Malaria with severe malarial anemia, blackwater fever (hemoglobinuria), and severe lactic acidosis, requiring immediate Intravenous Artesunate, 10% dextrose for hypoglycemia, and packed red cell transfusion."