Terms and Synonyms Searched:
| Terms | Search Results* | Entire Database** |
|---|---|---|
| Synonyms | ||
| headache | 3,650 studies | 4,903 studies |
| Cephalalgia | 69 studies | 95 studies |
| Head pain | 33 studies | 93 studies |
| Pain in head | 14 studies | 15 studies |
| Cephalgia | 9 studies | 15 studies |
| cranial pain | 2 studies | 2 studies |
| migraine | -- | 1,411 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 |