I ,ve been taking Doxicycline 100 mg, twice a day for about 20 days. The infection is much improved. In the last 2 days, I,ve noticed the onset of swollen painful lymph nodes, localized in the area of the original infection. I am 62 y.o. Asian female, otherwise in decent physical shape. My question 1. If lymphadenopathy is from Doxicycline, then it should resolve when I stop taking Doxicycline? 2. Is this a serious side effect that I should not take Doxycycline in the future? 3. Is this an allergic reaction that I should take note & have it be documented? Many thanks. Somewhat uncomfortable patient Juanita