MSNBC Yasmin Vossoughian Reports March 6, 2022 21:44:00
Keytruda helps your immune system fight cancer, but can also cause your immune system to attack healthy parts of your body. this can happen during or after treatment and may be severe and lead to death. see your doctor right away if you have cough, shortness of breath, chest pain, diarrhea, severe stomach pain or tenderness, severe nausea or vomiting, headache, light sensitivity, eye problems, irregular heartbeat, extreme tiredness, constipation, dizziness or fainting, changes in appetite, thirst, or urine, confusion or memory problems, muscle pain or weakness, fever, rash, itching, or flushin...