Modifiers matching stimulus:

• psychic,
• external,
• exogenous,
• unpleasant,
• stressful,
• neutral,
• local,
• simple,
• monotonous,
• adverse,
• internal,
• sensory,
• inflammatory,
• noxious,
• intense,
• subtle,
• artificial,
• chronic,
• harmful,
• complex,
• physiologic,
• cellular,
• negative,
• mechanical,
• subjective,
• physiological,
• innocuous,
• strong,
• real,
• special,
• identifiable,
• diverse,
• chemical,
• visual,
• distinct,
• extraneous,
• aversive,
• instructional,
• natural,
• rhythmic,
• nonspecific,
• ambient,
• detrimental,
• rewarding,
• constant,
• auditory,
• outside,
• prolonged,
• temporal,
• individual,
• familiar,
• positive,
• physical,
• peripheral,
• environmental,
• painful,
• damaging,
• biological,
• cytotoxic,
• maternal,
• supplemental,
• stimulating,
• organizational,
• pathologic,
• electrical,
• major,
• extracellular,
• light,
• pathological,
• abnormal,
• distressing,
• old,
• standard,
• mental,
• noninfectious,
• transient,
• pictorial,
• emotional,
• social,
• multiple,

Simple categories matching painful:

• task,
• procedure,
• surgery,
• condition,
• neuropathy,
• swelling,
• emotion,
• symptom,
• pathology,
• disease,
• effect,
• affection,
• lump,
• situation,
• thing,
• action,
• treatment,
• tumor,
• mind,
• event,
• episode,
• lesion,
• state,
• consequence,
• discomfort,
• sensation,
• process,
• syndrome,
• intervention,
• investigation,
• issue,
• stimulus,
• problem,
• period,
• illness,
• test,
• area,
• measure,
• malady,
• entity,
• disturbance,
• feelings,
• experience,
• practice,
• incident,
• therapy,
• affliction,
• disorder,
• way,
• change,
• transition,
• feeling,
• movement,
• structure,
• complication,