You should see a doctor for severe burns (category 3 or 4), burns on critical areas like the face or groin, those caused by chemicals, radiation, or electricity, signs of infection, severe pain, physical complications like dizziness or fever, or if you have pre-existing conditions like diabetes or immune compromise.You should see a doctor for severe burns (category 3 or 4), burns on critical areas like the face or groin, those caused by chemicals, radiation, or electricity, signs of infection, severe pain, physical complications like dizziness or fever, or if you have pre-existing conditions like diabetes or immune compromise.