Table 4 Headache diagnoses from different health-care departments (some data from Dermitzakis [3])
From: Classification and clinical features of headache patients: an outpatient clinic study from China
Diagnosis | ED, Greek, 2010 (%) [3] | ED, USA, 2005 (%) [12] | ED, Italy, 2004 (%) [10] | Headache clinic, USA 2011 (%) [13] | General medicine, Japan 2010 (%) [11] | Neurology outpatient, China 2010 (%) |
|---|---|---|---|---|---|---|
Primary headache | 50.1 | 64 | 24.3 | 73.4 | 39.9 | 50.1 |
Migraine | 15.4 | 38.7 | 16.7 | 51.4 | 30.8 | 23.8 |
TTH | 33.6 | 7.1 | 16 | 39.9 | 23.7 | |
Secondary headache | 22.1 | 25 | 41.3 | 9.4 | 42 | 27 |
Headache NOS | 27.7 | 20 | 34.4 | 3.4 | 17.9 | 22.9 |