My girlfriend went to the doctor complaining that she felt sick all the time, she was diagnosed with 'persistent nausea' to me that sounds like diagnosing the symptom with...the symptom. Hell I could be a doctor, your finger hurts after you slammed it into a door? no it's not broken, you've got 'digit pain.' Your throat closes up after you eat a strawberry? You're...allergic to strawberries, don't eat them.