What does it mean if you are have pain on the right side of you head ?

Many things possible: Can mean many things from simple scalp irritation, to scalp lesion or rash, to simple headache to ear problems, or muscle problem on that side not to mention brain/vascular probs The list is VERY long. If is persists or is associated with any other symptoms (scalp rash, ear problems, vision changes, fever, balance or mental focus problems, nausea or vomiting, neck pain) then you need to be seen.