Your provider needs to know about any health conditions or mental health issues you face. This will help them put together the best possible care plan for you. Your health history may affect which medications will be used. It can also help identify risks associated with taking certain medications. In some cases, a provider might refer you to a specialist or ask for further tests in order to assess any potential risks. Only in very rare cases will a provider refuse to prescribe you hormones. For example, if you have a life-threatening allergy to a medication.