Common Causes of Headache | |||
| PRIMARY HEADACHE | SECONDARY HEADACHE | ||
|---|---|---|---|
| Type | % | Type | % |
| Tension-type | 69 | Systemic infection | 63 |
| Migraine | 16 | Head injury | 4 |
| Idiopathic stabbing | 2 | Vascular disorders | 1 |
| Exertional | 1 | Subarachnoid hemorrhage | <1 |
| Cluster | 0.1 | Brain tumor | 0.1 |