Massive extra dural collection post cranioplasty causing rapid deterioration of the patient

Introduction. Cranioplasty is a standard neurosurgical procedure these days where surgeons repair a defect or deformity of a skull. This procedure can lead to fatal experiences after surgery. We encounter a similar experience we want to share. Case report. we present a case of 37 years 37-year-old patient who developed epidural fluid collection after cranioplasty. The patient deteriorated after surgery which we managed carefully and recovered later. Conclusion. Post-cranioplasty patients should be under observation and neurological deterioration should be kept in mind. Surgical intervention is not always needed and can be managed conservatively.