People have done it, and it's never a problem coming back to the US. The problem MIGHT be when you apply for citizenship, as they might ask you why you felt comfortable going back to Egypt if you claimed it was too unsafe for you to live there. If you don't think you will be targeted when you visit, and you can explain why it was safe for you to go for a visit, then go for it. If you have medical reasons, bring proof of those for the future when you apply for citizenship (IF they ask you about it at the interview).
Also, do you have an Egyptian passport? Don't use an RTD.