A Prospective Observational Registry of Primary Headache Patients Treated With Ausanil

Inclusion Criteria: * Men and women aged 18 to 80 years * Primary Headache disorder as per International Classification of Headache Disorders-11 * Ausanil naive * Signed dated informed consent * Females of childbearing potential must be using adequate contraception during study period. * Willing and able to comply with registry requirements to document headache response Exclusion Criteria: * Known allergy to Ausanil or any of its ingredients * Active bronchial asthma that in the opinion of the investigator would interfere with use of Ausanil * Nasal obstruction due to any cause or extensive nasal surgery resulting in scarring or other such impact on nasal mucosa that might lead to heightened sensitivity to Ausanil in the opinion of the investigator. * Pregnant or breast feeding females * History of addictive behavior * Any severe or chronic unstable medical or psychiatric condition * Active nasal infection or inflammation * Unable or unwilling to provide informed consent * Suffer from atypical, basilar or hemiplegic migraine that is new onset or unstable.