An infant is experiencing daily episodes of vertigo, excessive blinking with eyes closed, clenched teeth, and a drooping right lip. The child had a fever a month ago. Recently, she has been losing consciousness suddenly without limb stiffness, waking up with delayed reaction as if she had fallen asleep. Sometimes, she loses consciousness and then wakes up with drooling. Occasionally, she loses consciousness and then smiles upon waking, making it difficult to tell if she has truly lost consciousness or if she is playing. Additionally, her temper has become very bad.