Treatment of headache disorders

A method for treatment of a headache disorder in a human subject, comprising:

• introducing a stimulation member, wherein an outer surface of the stimulation member defines an expandable chamber, wherein an expansion member is arranged at least partly within the expandable chamber, the expansion member comprising at least one channel for supplying fluid to the expandable chamber, the expandable chamber being arranged in a non-expanded state, into a first nasal cavity of the human subject;
• expanding the expandable chamber of the stimulation member to an expanded state by supplying the fluid to the expandable chamber via the expansion member, so that the stimulation member abuts against tissue of the first nasal cavity at a first pressure in a range between 80 and 100 mbar;
• and
• vibrating the stimulation member to impart vibrations to the tissue of the first nasal cavity at a first frequency in a range between 70 and 100 Hz for a first duration,
• wherein a bending stiffness of the expansion member in a first direction perpendicular to a longitudinal direction of the expansion member is different from a bending stiffness in a second direction perpendicular to said first direction and to the longitudinal direction of the expansion member.