A 20 year old male come to casuality with head injury. Examination reveals normal counsciousness, clinically normal and blood in the tympanic membrane, most likely cause is

(Complete basilar fracture) (595 - 99- B & L 24th) (302-Baily & Love 25th)Extradural haemorrhage - Common in younger age group* Usually from haemorrhage of middle meningeal artery* **Lucid interval is characteristic* Surgery without delay is essentialSubdural haematoma - most common intracranial mass lesions resulting from head trauma* *Develop from tom bridging veins or cortical lacerations* More severe poorer out come* **CT - concave hyperdense collectionsBase of skull fractures|||Anterior Cranial Fossa FractureMiddle Cranial Fossa Fracture* Sub conjunctival haematoma* CSF rhinorrhoea* Carotico-cavemous fistula* Periorbital haematoma or "raccoon eyes"* CSF otorrhoea or rhinorrhoea* Haemotympanum ** Ossicular disruption* "Battle sign" (brushing behind the ear)* VII and VIII cranial nerve palsies