Final answer:
Service members should receive a hearing evaluation when showing signs of hearing loss, after exposure to loud noises, or if showing psychological symptoms related to hearing issues.
Step-by-step explanation:
Service members should be referred for further hearing evaluation if they are experiencing signs of hearing loss, such as difficulty understanding speech, needing to increase the volume on devices frequently, ringing in the ears (tinnitus), or if they have been exposed to loud noises, especially without adequate hearing protection. Periodic hearing screenings are part of routine health assessments in the military, but immediate evaluation is warranted if there is a sudden change in hearing, pain, discomfort, or any secretion from the ears. Furthermore, service members who are experiencing psychological symptoms such as stress, depression, or anxiety related to possible hearing loss should also be referred as these can complicate the accurate assessment and management of hearing impairment.