Would show/submit records showing what active treatment you are receiving during that time and explaining why the couldn't be done while studying. Some go home to seek treatment so it is important to showy going home was necessary and how medical what occupied your time and this wasn't more of a holiday. Hard to answer not knowing your condition but this general answer is hopefully good enough to tailor to your condition.
4.0 doesn't help although it does prove that you are a dedicated student so if there is a situation where discretion is possible it may help. Definitely won't count against you and you should highlight that you are a great student in your application.