Identifying the cause(s) of headaches, ranging from chronic, unrelenting headaches to acute ones, is a challenge faced by M.D.s and Doctors of Chiropractic alike.
There are many different types of headaches, and multiple causes. Nutritional issues should be considered---food triggers may be involved, in which a person gets headaches when they ingest certain foods or food additives.
Stress, both biomechanical (e.g. postural stress, repetitive motion, injuries) and emotional / psychological, is often part of the picture. Tension headaches are among the most common.
Aberrances of the cranial rhythms is another frequent occurrence closely related to headaches. When I balance a patient’s cranial rhythms, their headaches often disappear.
Sleep apnea is also now recognized as another source of headaches, in which abnormal proportions of oxygen & carbon dioxide result from interruptions in breathing.