There are countries that you are not allowed to enter if you are HIV positive. An entry restriction applies to these countries. There are also countries that require an HIV-free declaration before they will issue a work permit. In this case, you require an official declaration that you are HIV negative. If you do not want to submit an HIV-free declaration, the country can require you to take an HIV test. If you go to such a country, make sure you are well informed in advance. Political changes can lead to adjustments to the regulations. Therefore, it is a good idea to research the situation before you leave so you will not be faced with any surprises.
If you go abroad, you also need to know the shelf life of your medication and how best to store it (temperature, humidity etc.). Also find out if your medication is available there. For a longer stay abroad, you also need to know if your health insurance can be continued or not. Ask your HIV consultant for advice if you are unsure.