Differential diagnosis help page

Guidelines for adding terms to the list of terms in the Differential Diagnosis

Do add the term if:
 * 1) It is a sign or symptom of a disease
 * 2) It is a side effect of a drug
 * 3) It comes from a source such as a book or another database source

Do not add the term if:
 * 1) The term is another symptom: don’t add fatigue to headache
 * 2) The term represents successful treatment of a disease
 * 3) If a drug is used to treat a disease (add this to the treatment database)(Don’t add Alka Sletzer to the database for headache since it is used to treat a headache, don’t add aspirin, Tylenol to the ddx database for headache)
 * 4) The term is part of a reference articles title
 * 5) Do not insert something where it says something like “an engineering headache” to headache