A 30-year-old female presents with a headache and a feeling of pressure in her cheeks. She has a known history of hay fever. What could be the cause of her symptoms and how should it be investigated?
Given her history of hay fever, this patient could be experiencing a sinus headache due to sinusitis, a common complication of allergic rhinitis. This can be confirmed by an examination of the nasal and sinus cavities, and potentially imaging studies such as a CT scan. Treatment typically involves management of the underlying allergic rhinitis and may include a course of antibiotics if bacterial sinusitis is suspected.