Final answer:
The clinical presentation described in the question is consistent with a seizure disorder known as epilepsy.
Step-by-step explanation:
The clinical presentation described in the question is consistent with a seizure disorder known as epilepsy. The convulsive episode with leftward eye deviation, tonic contracture of the left side, and subsequent postictal symptoms are characteristic of a seizure. Seizures can cause temporary changes in motor control and sensory perception, and can be caused by various factors including neurological conditions, head injuries, infections, and genetic disorders.