Identify the most common symptom in the given condition.
Migraine
One of the most common symptoms of a migraine is a throbbing or pulsing pain on one side of the head.
Complete the following task based on the instruction and optional input provided.### Instruction:
Identify the most common symptom in the given condition.

### Input:
Migraine

### Output:
One of the most common symptoms of a migraine is a throbbing or pulsing pain on one side of the head.