Which of the following is false regarding frontal sinusitis
Clinical features of frontal sinusitis:

A frontal headache: showing periodicity and tenderness. 
Oedema of upper eyelids with suffused conjunctiva and photophobia.
Nasal discharge: a vertical streak of mucopus is seen high up in the anterior part of middle meatus
 X-ray: opacity of affected sinus seen. Both Waters' and lateral views should be taken.
CT scan is preferred modality.
Pain shows periodicity
Most common sinus involved in infants and children
Pain is referred to as office headache
Tenderness is present just above the medial canthus of eye