Conditions in which the primary symptom is HEADACHE and the headache cannot be attributed to any known causes.
Also Known As:
Headache Disorders, Primary; Alarm Clock Headache; Benign Cough Headache; Benign Exertional Headache; Cough Headache; Headache, Thunderclap; Hypnic Headache; Hypnic Headache Syndrome; Ice-Pick Headache; Primary Cough Headache; Primary Exertional Headache; Primary Stabbing Headache; Primary Thunderclap Headache; Stabbing Headache; Thunderclap Headache; Alarm Clock Headaches; Benign Cough Headaches; Benign Exertional Headaches; Clock Headache, Alarm; Clock Headaches, Alarm; Cough Headache, Benign; Cough Headaches, Benign; Disorder, Primary Headache; Disorders, Primary Headache; Exertional Headache, Benign; Exertional Headaches, Benign; Headache Disorder, Primary; Headache Syndrome, Hypnic; Headache Syndromes, Hypnic; Headache, Alarm Clock; Headache, Benign Cough; Headache, Benign Exertional; Headache, Cough; Headache, Hypnic; Headache, Ice-Pick; Headache, Primary Cough; Headache, Primary Exertional; Headache, Primary Stabbing; Headache, Primary Thunderclap; Headache, Stabbing; Headaches, Alarm Clock; Headaches, Benign Cough; Headaches, Benign Exertional; Headaches, Ice-Pick; Hypnic Headache Syndromes; Ice Pick Headache; Ice-Pick Headaches; Primary Headache Disorder