I had hayfever when I was a schoolboy, years 11-15, every day I would walk 500m through grass to the bus stop in the morning which would set off my hayfever. I never complained about it and my parents didn't care enough to bother. I'm pretty sure it resulted in suboptimal maxilla and mandible development. Because hayfever makes you mouth breathe. It gave me a long/longer face.
Long face From open mouth breathing thought to affect the bone growth in the face
Dental malocclusion Remains controversial but thought to be linked to craniofacial development in early childhood (long face).