<prompt> After a minor head injury a young patient was unable to close his left eye and had drooling of saliva from left angle of mouth. He is suffering from:VIIth nerve injury.Vth nerve injury.IIIrd nerve injury.Combined VIIth and IIIrd nerve injury.  <response>: Ans. is a i.e. VII nerve injury Ref API medicine, 6e, 730, Dhingra, 3e p. 123 2e, p99 Harrison 17e p 2584-8516e p 2436Inability to close the eye and drooling of saliva from the same side of the mouth is characteristic of VII nerve palsy ULCF of UL Facial nerve palsyLower motor neuron There is loss of muscles of facial expressionUpper motor neuronIpsilateral face is involvedAbsence of furrowing of face on the same sideInability to close the ipsilateral eye on attempted closure the eyeball rolls upwards- Bells phenomenonFlattening of the nasolabial foldsDrooping of the angle of the mouthDeviation of mouth towards opposite sideContralateral face is involvedThe lower half of the face is involved as in lower motor neuron palsy where as the upper half of the face is spared as it has BL innervation. Lets also seeClinical feature of 5th Nerve palsyLoss of corneal reflexLoss of sensory sensations of faceWhen one trigeminal N. is paralysed, the jaw deviates to the paralysed side when the pt. attempts opening his mouth Because of unbalanced action of pterygoid Bl upper motor neuron lesion of trigeminal N. above the level of pons, causes exaggerated jaw jerkClinical feature of 3rd Nerve palsySevere ptosisDilated pupilDivergent squintCrossed diplopia 