I am a 26 year old female with medium to tan skin. The last time I got lip filler, 2 weeks later, my lips were diffusely covered with cold sores. I did not think they were linked with filler due to the timeline. My cheek also had a raised itchy rash. After now receiving a lip flip, I have a similar tingling sensation on my lip and the same cheek rash. I never experienced this prior with botox or filler. Are they linked? How can I avoid in the future?