A Headache

Literary Licensing, LLC

Headache: Diagnosis And Treatment                

Kessinger Publishing

Headaches: Their Nature, Causes And Treatment (1880)

Nova Biomedical

Headaches: Causes, Treatment and Prevention: Causes, Treatment & Prevention

Mariner

The Headache: The Science of a Most Confounding Affliction-and a Search for Relief

Headache                                        

Brand: Brain Sync Corp

Headaches: Sound Techniques for Healing          

Independently published

Headache                                        

Literary Licensing, LLC

Headaches: How Caused And How Cured              

Kessinger Publishing

Headaches: Their Causes And Their Cure (1865)    

Kessinger Publishing

Headache: Its Causes And Treatment