An initial sign of a chickenpox infection is a persistent headache. According to the US Centre for Disease Control and Prevention, a person first becomes aware they have contracted the viral infection when they start to experience a headache a few days before the actual rash appears. This headache is unpleasant and doesn’t go away through simple rest.
Headaches associated with the disease vary in severity but usually, the onset of a more severe headache is incremental, with the infected person first experiencing a mild headache which then escalates into a severe headache or a migraine by the time the chickenpox spots appear.
Not everyone experiences the headaches associated with the condition in the same way. Small children, babies and those with low immunity usually suffer more severe headaches, and other chickenpox symptoms, than adults and healthier individuals. It’s recommended visiting a pharmacy to receive a mild painkiller.