Reward Processing under Chronic Pain from the Perspective of “Liking” and “Wanting”: A Narrative Review

Table 1

Reward-related behaviors in patients with chronic pain.

Study	Disorders	Test	Measurement	Results
Geha et al. [11]	Back pain	Rating sugary drinks	Liking	No change
			Wanting	No change
			Sweetness	No change
			Intensity	No change
		Rating fat puddings	Liking	Decrease
			Wanting	No change
			Sweetness	No change
			Intensity	No change
Small and Apkarian [18]	Low back pain	Rating sucrose solution	Pleasantness	No change
			Intensity	Increase
Marbach and Lund [21]	Facial pain and TMJ pain	PAS	Anhedonia	Increase
Marbach et al. [22]	Back pain or facial pain	PAS	Anhedonia	Uncorrelated to pain intensity
Elvemo et al. [25]	Various	BIS/BAS	Reward drive	No change
		BDI	Anhedonia	Increase
		BIS/BAS	RER	Decrease
Becerra-Garcia and Robles Jurado [24]	Fibromyalgia	SPSRQ	RER	Decrease
Claes et al. [28]	Fibromyalgia	Semistructured interview	Goal conflicts	Increase
Hardy et al. [32]	Fibromyalgia	Daily diary	Goal conflicts	Increase
Mun et al. [10]	Not mentioned	Daily diary	Goal conflicts	Increase

Abbreviations: TMJ, temporomandibular joint; PAS, Physical Anhedonia Scale; BIS, Behavioral Inhibition Scale; BAS, Behavioral Activation Scale; BDI, Beck Depression Inventory; SPSRQ, Sensitivity to Punishment and Sensitivity to Reward Questionnaire; RER, reward-induced emotional responsiveness.