<s>[INST] Hi doctor,I would like to give an insight into my problem, with started ending of last year. I noticed that I have some dry skin on my lower lip and a very small scab just underneath it. I ignored the same and thought it is due to winter. Five months back, I had a tender lower lip, which eventually dried off and the old skin peeled off. It left a scab on my lower lip border. I had a fever due to weather change, and as soon as my fever went off, I had a tender, fluid-filled lower lip. It became so tender due to the fluid beneath it and as usual, the scab formed underneath it at the border. But this time, it was bigger than before. Usually, I cannot feel any blisters being formed on my lower lip border because I keep a beard so I cannot notice my chin and it is never painful either. In fact, I never get any blister on my lip, and the lower lip always gets tender.This time, I went to a dermatologist and asked if it is herpes because I started checking my symptoms online. The doctor told me that it is a cold sore, and I was advised to have Acyclovir for seven days. The doctor did not examine it and was just listening to my symptoms. I would also like to tell you that since past five months, my chin area stays red and a bit flaky, and sometimes I feel like there is some wound. The doctor prescribed me antibiotics and fungal creams, but nothing happened.Four days back, I had a stomach infection and had a fever, which went away after two days. But my lower lip border area started itching and then my lower lip was swollen. Later, only the lower lip and its border got soggy and tender this time. And no blisters were formed. This time I visited a senior doctor, and I told him the entire scenario, He asked me to get few test done, like IgM test for herpes, ELISA test, IgG test for herpes, urine test, TLC, etc., when I told him that it is happening for the fourth time. The thing is that all the herpes test came negative. The urine test came back normal, and even TLC and DLC is balanced and normal. All reports were concluded to be normal. He asked me to have Valacyclovir for two days. I would also like to tell you that whenever this thing is going to happen, I get ulcers in my mouth a week or 10 days before this happens. I have always taken pictures of my lip from the first instance to latest, which I am attaching. What is this thing which keeps reoccurring on my lip in every two months? What is the redness (like whiteheads) on my chin, which sometimes dries up like flakes and again returns? Do I have herpes or something else? And this process usually last not more than seven days. [/INST] Hi. For more information consult a dermatologist online --> </s>