Human Phenotype Ontology id HP_0001348 (Brisk reflexes) can be described as follows. Tendon reflexes that are noticeably more active than usual (conventionally denoted 3+ on clinical examination). Brisk reflexes may or may not indicate a neurological lesion. They are distinguished from hyperreflexia by the fact that hyerreflexia is characterized by hyperactive repeating (clonic) reflexes, which are considered to be always abnormal. Also known as: Brisk deep tendon reflexes.