Table 2. The co-morbidities of IC/BPS patients with higher or lower serum nerve growth factor levels.

Co-morbidity	NGF(pg/ml)	Co-morbidity	NGF(pg/ml)
Peptic ulcer, chronic hepatitis, Thyrotoxicosis, reflux esophagitis, spondylosis	18.0	Neurosis	2.79
Migraine	6.05	Affective disorder, breast cancer	2.79
Functional GI disorder	5.26	Function GI disorder, reflux esophagitis	2.79
DM, hypertension	4.5	SLE	2.79
Psychosis	4.5	Cervical cancer, insomnia	2.79
CAD	3.78	Nil	2.79
DM, hypertension	3.78	Nil	2.79
DM	3.44	CAD, neurosis	2.64
Reflux esophagitis	3.44	Nil	2.64
Affective disorder, cervical cancer	3.44	Peptic ulcer, rheumatoid arthritis	2.5
Peptic ulcer, neurosis, migraine	3.44	NPC, fasciitis	2.5
DM, osteoarthritis, dyslipidemia	3.11	Thyroid tumor	2.5
Nil	3.11	CAD, DM, irritable bowel syndrome, dyslipidemia	0
Nil	3.11	Insomnia	0
Nil	3.11	Fasciitis	0

CAD: coronary arterial disease, DM: diabetes mellitus, GI: gastrointestinal, NPC: nasopharyngeal carcinoma, SLE: systemis lupus erythematosus.