This depends on what’s causing you to hear things. Sometimes, once you and your doctor solve that problem, the hallucinations go away or at least may not happen as much.
In some cases, there’s an easy solution. Your doctor may lower the dose of a medicine you take. In others, treatment is more complex and you may need to try several things to see what works. For example, with an illness like schizophrenia, you might need a mix of medications, therapy, and other care.