Introduction: Headache with Neurological Deficits and CSF Lymphocytosis (HaNDL) syndrome is a rare, self-limiting condition characterized by episodes of severe headache accompanied by transient neurological deficits and cerebrospinal fluid lymphocytic pleocytosis. This condition is exceptionally rare in the paediatric population, with most cases reported in adults. We present a case of HaNDL syndrome in an 8-year-old boy who initially presented with features suggestive of viral meningitis. Case presentation: An 8-year-old previously healthy boy presented with acute onset slurred speech, left upper limb weakness (4/5 power), and left-sided facial drooping associated with worsening headache, nausea, and vomiting. Symptoms developed over 6 hours with intermittent weakness and concurrent left ear pain. Two weeks prior, he was diagnosed with viral meningitis following similar symptoms. Examination revealed altered comprehension, bilateral positive Kernig's sign, left facial asymmetry with partial upper motor neuron facial nerve palsy , and papilledema on fundoscopy . Investigations showed elevated white cell count (19.23), CSF lymphocytic pleocytosis (170 leucocytes, 98% mononuclear cells), normal CSF glucose (3.0mmol/L) and protein (0.43g/L). MRI demonstrated subtle leptomeningeal enhancement without evidence of ADEM. Repeat MRI was normal. Extensive infectious and autoimmune workup was negative. Treatment with intravenous antibiotics, aciclovir, methylprednisolone, and acetazolamide resulted in complete recovery . Conclusions: This case highlights HaNDL syndrome as an important differential diagnosis in paediatric patients presenting with recurrent headache and focal neurological deficits. Early recognition and appropriate supportive management lead to excellent outcomes in this selflimiting condition.