Neuropsychological Symptoms among Workers Exposed to Toluene and Xylene in Two Paint Manufacturing Factories in Eastern Thailand

Table 4

Health effects on neuropsychological symptoms.

Neuropsychological symptoms	Nonexposed; (52.1%)	Exposed; (47.9%)	Exposed group ()
			Xylene concentration		Toluene concentration
			≤2.71 ppm	>2.71 ppm	≤9.52 ppm	>9.52 ppm
			(60.9%)	(39.1%)	(66.3%)	(33.7%)
(1) Neurological symptoms	29 (59.2)	52 (56.5)	32 (57.1)	20 (55.6)	37 (60.7)	15 (48.4)
(2) Psychosomatic symptoms	33 (67.3)	65 (70.7)	40 (71.4)	25 (69.4)	47 (77.0)	18 (58.1)
(3) Mood symptoms	14 (28.6)	21 (22.8)	13 (23.2)	8 (22.2)	15 (24.6)	6 (19.4)
(4) Memory and concentrating	18 (36.7)	30 (32.6)	21 (37.5)	9 (25.0)	21 (34.4)	9 (29.0)
(5) Tiredness	16 (32.7)	35 (38.0)	23 (41.1)	12 (33.3)	27 (44.3)	8 (25.8)
(6) Sleep disturbances	15 (30.6)	43 (46.7)	25 (44.6)	18 (50.0)	29 (47.5)	14 (45.2)

(1) Neurological symptoms: facial paresthesia, weakness, peripheral neuropathy, anosmia, hyposmia, change of taste, dizziness, and numbness.
(2) Psychosomatic symptoms: headache, sweating with unknown cause, dyspnea, palpitation, lethargy, fatigue, loss of libido, nausea, vomiting, loss of appetite.
(3) Mood symptoms: being restless, depression.
(4) Memory and concentrating: difficulty in concentration.
(5) Tiredness: drowsiness.
(6) Sleep disturbances: insomnia, difficulty to sleep.