Terms and Synonyms Searched:
| Terms | Search Results* | Entire Database** |
|---|---|---|
| Synonyms | ||
| headache | 4,214 studies | 5,617 studies |
| Cephalalgia | 73 studies | 101 studies |
| Head pain | 37 studies | 100 studies |
| Pain in head | 14 studies | 15 studies |
| Cephalgia | 8 studies | 14 studies |
| cranial pain | 2 studies | 2 studies |
| migraine | -- | 1,586 studies |
| Migrainous headache | -- | 9 studies |
| -- | No studies found |
| * | Number of studies in the search results containing the term or synonym |
| ** | Number of studies in the entire database containing the term or synonym |