<s>[INST] My doctor prescribed Lisinopril 20 mg. Ive been taking it about a week now. Yesterday I broke out in a rash through my midsection  down to my pubic area and up onto 1 breast. This morning it has spread around to my back. The right side of my midsection is also swollen. Ive also had joint pain. I havent had one of the pills since yesterday morning. Would this medicine cause this and if so should I be concerned? The swelling really has me concerned. Thank you for you answer  Im 60 years old. I weigh 225 and I do have high blood pressure. [/INST] Hello! Thank you for asking on Chat Doctor! Regarding your concern, I would explain that this rush could be related to an allergic reaction caused by lisinopril. You should know that all the Chat Doctor.  But, it is important excluding other possible causes that may lead to this symptomatology too. I would recommend consulting with your attending physician for a careful physical exam and some tests (complete blood count and inflammation tests for a possible infection). Meanwhile, I would recommend stopping lisinopril intake and closely monitoring your blood pressure (high blood pressure can occur from this change in your therapy). Hope to have been helpful! Kind regards,  </s>