Apparatus and methods for treating and monitoring conditions such as rhinitis are disclosed herein. The technology utilizes ultrasound scans to identify target treatment sites, and monitor the treatment of a patient undergoing a treatment. The treatment may be an ablation treatment of a nasal nerve, for example the PNN for the treatment of nasal conditions, such as rhinitis. The ultrasound scans are performed within the nasal cavity with an ultrasound probe or a combined ultrasound and ablation probe and may use Doppler, A-mode, B-mode, M-mode or other ultrasound and non-ultrasound modalities to detect and monitor the target treatment sites.