Methotrexate induced Hypersensitivity pneumonitis: Review of Literature with Case report

Methotrexate induced interstitial pneumonitis can easily be misdiagnosed as it usually presents as community acquired pneumonia. Also, when a patient presents with symptoms of pneumonia, esoteric causes stands at the bottom of our differential diagnosis. Unrecognized Methotrexate induced interstitial pneumonitis can lead to serious complications like ARDS or death. We report a case of Methotrexate induced interstitial pneumonitis to familiarize primary care physicians about the presentation, risk factors, treatment and literature updates of this rare adverse effect of Methotrexate.