The main sign a person may have the chicken pox is a regular headache. Even though chicken pox is defined as a moderate disorder, it is still worth paying attention. It may be rather infective. The first symptoms show up within the next 10-21 days. Most of the patients share that a light headache was the initial phase of the illness. It may vary from the light to medium and severe stage. This symptom can develop into a regular migraine.