Possible causes here include:

Giant Cell or Temporal Arteritis. New or change in existing headache, jaw pain with eating, and tenderness of scalp upon touch and pressure. This requires prompt evaluation and treatment as can cause loss of vision.

Sinusitis. Usually associated with nasal congestion, discharge, cough, fever, and ear fullness.

Shingles. This only affects one side with pain or hypersensitivity on top of the head, eye, and forehead on the affected side with a skin eruption on the same side. Rash on the side and tip of the nose indicates eye involvement. This also requires prompt anti-viral therapy to avoid loss of vision.