Modifiers matching pain:

• common,
• chronic,
• local,
• emotional,
• musculoskeletal,
• physical,
• visceral,
• deep,
• neuralgic,
• somatic,
• pelvic,
• severe,
• localised,
• extreme,
• abdominal,
• vascular,
• psychological,
• acute,
• neuromuscular,
• sudden,
• significant,
• rheumatic,
• social,
• persistent,
• sharp,
• new,
• muscular,
• intermittent,
• general,
• unrelenting,
• internal,
• paroxysmal,
• episodic,
• mild,
• secondary,
• experienced,
• progressive,
• postoperative,
• lasting,
• normal,
• central,
• debilitating,
• predictable,
• personal,
• real,
• back,
• everyday,
• joint,
• clinical,
• inflammatory,
• mental,
• external,
• serious,
• intense,
• related,
• intractable,
• localized,
• temporary,
• minor,
• psychic,
• throbbing,
• recurrent,
• unrelieved,
• familiar,
• dental,

Simple categories matching persistent:

• condition,
• upset,
• symptom,
• compound,
• complaint,
• state,
• dirt,
• infection,
• circumstances,
• retrovirus,
• contaminant,
• pesticide,
• organism,
• material,
• disease,
• metal,
• headache,
• substance,
• herbicide,
• disorder,
• cause,
• bacteria,
• lesion,
• insecticide,
• chemical,
• mineral,
• virus,
• time,
• aggression,
• discomfort,
• volatile,
• illness,
• affliction,
• difficulty,
• substrate,
• event,
• information,
• problem,
• injury,
• pathogen,
• consequence,
• distress,
• matter,
• organophosphate,
• pain,
• abnormality,
• instability,
• pollutant,