Below are a collection of excerpts from biomedical research articles. Excerpts are separated by newlines. Your task is to answer a question based these excerpts. Your response should be formatted as a `json` array.

For instance, given excerpts from articles studying breast cancer, and the question "what are some common genes associated with breast cancer?", an answer might be formatted like: ["BRCA1", "BRCA2", "TP53", ...]. Only include answers that are mentioned in the provided exerpts. The array should always have at least one answer; do not respond with an empty array []. Do not include any text in your response other than the answer array.

Context: INTRODUCTION: Gradenigo's syndrome is nowadays a rare condition characterized by a triad of otorrhea, facial pain with trigeminal nerve involvement and abducens nerve palsy.
Gradenigo's syndrome is a rare but life threatening complication of acute otitis media (AOM), which includes a classic triad of otitis media, deep facial pain and ipsilateral abducens nerve paralysis.
We report a case of typical Gradenigo's syndrome, including left abducens nerve palsy, left facial pain and paresthesia in V1 and V2 distribution of trigeminal nerve caused by solitary osseous plasmacytoma of the left petrous apex.
BACKGROUND: Gradenigo's syndrome is a rare disease, which is characterized by the triad of the following conditions: suppurative otitis media, pain in the distribution of the first and the second division of trigeminal nerve, and abducens nerve palsy.
RESULTS: It was after Gradenigo that the well-known syndrome consisting of diplopia and facial pain due to a middle ear infection was named.
Gradenigo's syndrome, the triad of suppurative otitis media, abducens nerve palsy and pain in the ophthalmic division of the trigeminal nerve, remains a rare complication of otitis media.
In 1904, Giuseppe Gradenigo published his case series on the triad of ipsilateral abducens nerve palsy, facial pain in the trigeminal nerve distribution, and suppurative otitis media, which would subsequently be referred to as Gradenigo syndrome

Question:
List symptoms of Gradenigo's syndrome.
["otitis media", "deep facial pain", "abducens nerve paralysis"]