Battle's sign is associated with:
Extravasation of blood results in ecchymosis behind the ear, known as Battle's sign. A fracture of the anterior skull base can result in anosmia (loss of smell from damage to the olfactory nerve), CSF drainage from the nose (rhinorrhea), or periorbital ecchymoses, known as raccoon eyes. Ref: Schwaz's principle of surgery 9th edition, chapter 42.
Orbital cellulitis
Head injury
Conjunctivitis
Liver failure