One sided facial pain can be due to various reasons:
1. Dental problems: Get dental check up done to rule out cavities causing pain.
2. Trigeminal Neuralgia: In this condition, sharp shooting pain occurs in paroxysms. Its idiopathic or due to microvascular compression of Trigeminal nerve. This can be diagnosed on clinical evaluation and MRI brain. This can be managed by medicines, surgery or Radiofrequency ablation of Trigeminal ganglion.
3. Idiopathic facial pain: Non specific facial pain which can be managed with interventions like sphenopalatine ganglion block or Stellate ganglion block.
Next Steps
Consult a dentist. If no problem is found in teeth, consult a pain specialist.
Health Tips
Do not ignore the symptom. Underlying pathology can be aggravated.