noun
Medical term referring to the specific diseases or conditions for which a particular drug or treatment is indicated.
この薬の適応症は高血圧です。
The indication for this medicine is hypertension.
適応 means 'adaptation' or 'application' in a broader sense, while 適応症 specifically refers to medical indications.
Compound of 適応 (adaptation, application) and 症 (disease, condition), referring to the conditions a treatment is adapted for.