**Core Concept**
Jitteriness and seizures are two distinct neurological phenomena that can be challenging to differentiate, especially in the pediatric population. Jitteriness is characterized by a sudden, brief, and involuntary movement of a limb or the entire body, whereas seizures are a more complex and sustained disordered electrical activity of the brain.

**Why the Correct Answer is Right**
Jitteriness is typically caused by a noxious or painful stimulus, a metabolic disturbance, or a withdrawal from a substance such as alcohol or benzodiazepines. It is often associated with a normal electroencephalogram (EEG) and is not accompanied by a loss of consciousness or a postictal phase. In contrast, seizures are associated with abnormal electrical activity in the brain, often with a loss of consciousness and a postictal phase.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because seizures can indeed be distinguished from jitteriness based on the presence of an abnormal EEG, which is not a characteristic of jitteriness.
**Option B:** This option is incorrect because seizures are often accompanied by a loss of consciousness, which is not typically seen in jitteriness.
**Option C:** This option is incorrect because seizures are characterized by a more complex and sustained disordered electrical activity of the brain, which is not seen in jitteriness.

**Clinical Pearl / High-Yield Fact**
A classic way to remember the key differences between jitteriness and seizures is to recall the mnemonic "JIT" for jitteriness, which stands for "Jitteriness Is Temporary" and is characterized by a brief and involuntary movement, whereas seizures are more complex and sustained.

**Correct Answer:** A.