Imuran and Fever: What Users Say

• Kar...
• February 26, 2020

For Lupus "I was prescribed Imuran for systemic lupus. I took the medicine for about one month. I had a terrible allergic reaction - I was hospitalized for several days. High fever, liver, and joint pain. It is my understanding that Imuran can cause an allergic reaction (it was not a unique reaction to me). I have since learned (from a doctor at the Johns Hopkins Lupus Center) that there is a test to determine if you will tolerate Imuran. The test checks the level/presence of an enzyme necessary for the body to process or tolerate Imuran. I would ask your doctor about the test for Imuran tolerance before starting Imuran - my allergic reaction was very bad. I am not an alarmist, and I understand that Imuran is an effective medicine for many people. However, I wish I had known that a test was available to determine if a patient will tolerate Imuran, as this would have been extremely helpful and I could have avoided a very serious allergic reaction to Imuran."

• MI ...
• February 18, 2016

For Rheumatoid Arthritis "The first two to three weeks were fine. Then I started experiencing a bad headache, the next two days fever and chills. The next evening, severe chills, weakness, dizziness, raging fever (up to 104.3), and began throwing up. It was the worst I've ever felt in my life (and that includes a hospitalization in ICU when first diagnosed). I was on the verge of calling 911. However, it eventually passed (as the medicine worked its way out of my system) and the fever subsided. My rheumatologist ran a complete series of blood work and she said that I had an allergic reaction. Prior to starting Imuran, I had been tested for liver compatibility and the results showed that I would have no issues, so I proceeded. Proceed with extreme caution."

• Mom...
• August 15, 2015

For Lupus "At the 2 wk mark of taking Imuran, I started having a terrible headache. My body started to ache. I couldn't get comfortable no matter what I did, and I had trouble sleeping. I had a fever, I had chills, and I sweated worse than being at the gym. My urine was golden dark yellow, and my skin was pale. I was tested for the flu, which was negative, and my blood test results were normal (as normal as can be for a lupus patient). My doctor thought I had a virus but told me to stop taking the Imuran. Within a little over 24 hours, the headache started going away, the urine went back to normal color, and my body was feeling better."

• ThM...
• August 28, 2010

For Lupus "Imuran caused a 10-day hospital stay for me. I was on it about 2 weeks, started running a fever of 104, had chills, very short of breath. I was treated for regular flu, swine flu, tested for all sorts of other breathing problems."

• Imu...
• Taken for less than 1 month
• January 24, 2016

For Crohn's Disease "Imuran seemed fine for the first couple weeks, until I got a fever of 103 degrees. My doctor instructed me to stop taking the Imuran if my temperature reached 103 degrees, so I stopped for a week or so. My temperature returned to normal, so my doctor instructed me to start Imuran again. After one day's dosage, I experienced the worst imaginable pain in my whole torso. It turns out the Imuran gave me pancreatitis. I had to spend 3 days on an IV drip in the hospital and an all-liquid diet for a week after."