Kefalohaematoma You Won’t Believe What Happens After Brain Bleed - Redraw

Understanding the Context

What Is Kefalohaematoma?

Kefalohaematoma originates from Greek ("kephalē" meaning head, "haima" meaning blood). It describes a focal hematoma—typically located in cerebellum (kephalos) or infratentorial regions—after head trauma. Though not technically a “tumour,” the localized blood collection creates pressure and risk, making prompt diagnosis critical.

The Silent Period: What Happens Immediately After a Brain Bleed?

Key Insights

Following a traumatic injury causing kefalohaematoma, the brain enters a delicate phase:

• Initial Shock & Compensation: The body initially responds with neuroinflammatory signals. The brain’s compensatory mechanisms work to maintain blood flow and oxygen levels, but localized bleeding disrupts these processes.
  - Pressure Buildup: Blood expands within confined spaces but often remains localized—in the cerebellum or brainstem—causing increased intracranial pressure (ICP).
  - Silent Damage: Unlike overt hemorrhagic strokes with visible symptoms, early kefalohaematomas can mask severe injury, making early imaging vital.

What Happens After the Bleed: The Post-Injury Cascade

Here’s where reality meets urgency:

Final Thoughts

1. Silent Progression and Risk of Expansion
Even without dramatic symptoms, blood accumulation can expand under pressure, worsening brain injury. Unlike classic clotted hematomas, kefalohaematomas have unique dynamics due to partial venous drainage, allowing slow or silent bleeding progression.

2. Neurological Deterioration – The Hidden Threat
Many patients appear stable initially but may suddenly develop dizziness, slurred speech, vomiting, unsteadiness, or drowsiness. This “worsening” isn’t always tied to the original injury site—pressure shifts and secondary injury mechanisms take effect.

3. Secondary Brain Injury Mechanisms
- Ischemia: Blood clots can impede function and blood flow downstream.
- Inflammation: Blood breakdown triggers inflammatory cascades damaging healthy tissue.
- Herniation Risk: In severe cases, increased ICP may cause brain tissue displacement—life-threatening and irreversible if untreated.

The Role of Imaging: CT Scans and Beyond

In diagnosing kefalohahematomas, non-invasive imaging is indispensable.