| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Chronic cerebral ischemia | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic major depressive disorder, single episode | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic anoxic encephalopathy | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic meningitis | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Persistent vegetative state | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic recurrent major depressive disorder | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic progressive non-hereditary chorea | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic progressive epilepsia partialis continua | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic bipolar I disorder, most recent episode depressed | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic non-neuropathic Gaucher's disease | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic motor tic disorder | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic brain syndrome | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Pure autonomic failure | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic progressive paraparesis | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic paroxysmal hemicrania | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic mixed headache syndrome | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Intermittently raised pressure hydrocephalus | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Recurrent major depression | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Intermittent cauda equina claudication | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic depression | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Seasonal affective disorder | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Acute-on-chronic glaucoma | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Intermittent angle-closure glaucoma | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Idiopathic feline polioencephalomyelitis | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic viral encephalitis | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Granulomatous amebic encephalitis | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Proventricular dilation disease | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Benign multirecurrent endothelioleukocytal meningitis | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Recurrent manic episodes | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Recurrent depression | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic echovirus meningoencephalitis | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Granulomatous meningoencephalitis | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Hepatic coma due to chronic hepatitis B | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic organic mental disorder | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Recurrent hypersomnia | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic intracranial subdural hematoma | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic inflammatory demyelinating polyneuropathy | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic inflammatory demyelinating polyradiculoneuropathy | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic non-traumatic intracranial subdural hemorrhage | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic paraplegia | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic paralysis due to lesion of spinal cord | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic central serous chorioretinopathy | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Paroxysmal dystonia | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Intermittent spinal claudication | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Cutaneous mastocytosis, short stature, hearing loss syndrome | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Frequent episodic tension-type headache | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic venous infarction of spinal cord | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Recurrent complex partial epilepsy | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Complex regional pain syndrome | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic painful neuropathy due to diabetes mellitus | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic painful polyneuropathy following chemotherapy | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic intractable migraine without aura | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Idiopathic recurrent stupor | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Recurrent benign focal seizures of childhood | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Distal hereditary motor neuropathy type 1 | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Distal hereditary motor neuropathy type 7 | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Hereditary motor and sensory neuropathy type 5 | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Hereditary motor and sensory neuropathy with acrodystrophy | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Charcot-Marie-Tooth disease type 2B5 | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Autosomal recessive lower motor neuron disease with childhood onset | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Young adult-onset distal hereditary motor neuropathy | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Early-onset progressive neurodegeneration, blindness, ataxia, spasticity syndrome | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Autosomal recessive intermediate Charcot-Marie-Tooth disease type C | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Autosomal dominant Charcot-Marie-Tooth disease type 2Q | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Severe neurodegenerative syndrome with lipodystrophy | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Childhood-onset spasticity with hyperglycinemia | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Autosomal dominant Charcot-Marie-Tooth disease type 2O | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Peripheral neuropathy, myopathy, hoarseness, hearing loss syndrome | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Charcot-Marie-Tooth disease type 2P | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Muscle-eye-brain disease, congenital muscular dystrophy | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Lower motor neuron syndrome with late-adult onset | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Amyotrophic lateral sclerosis type 4 | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Autosomal dominant adult-onset proximal spinal muscular atrophy | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Persistent idiopathic facial pain | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Mills syndrome | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Childhood-onset autosomal recessive myopathy with external ophthalmoplegia | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Progressive external ophthalmoplegia | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic hiccup | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Alexander's disease | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Progressive cone-rod dystrophy | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Progressive muscular atrophy | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Progressive multiple sclerosis | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Benign monomelic amyotrophy | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Recurrent atlantoaxial subluxation with myelopathy | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Hereditary cerebral hemorrhage with amyloidosis | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Acute relapsing multiple sclerosis | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Demyelination of central nervous system co-occurrent and due to Behcet disease | Is a | False | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic fatigue syndrome | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Progressive epilepsy-intellectual disability syndrome Finnish type | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic infectious disease of central nervous system | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Abdominal cutaneous nerve entrapment syndrome | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Congenital cataract with ataxia and deafness syndrome | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Persistent neonatal myasthenia gravis | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| 2-methyl-3-hydroxybutyric aciduria | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Spondylometaphyseal dysplasia with cone-rod dystrophy syndrome | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Chronic relapsing inflammatory optic neuropathy | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Membrane metalloendopeptidase related autosomal dominant Charcot Marie Tooth disease type 2 | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Autosomal dominant Charcot-Marie-Tooth disease type 2 due to diacylglycerol O-acyltransferase 2 mutation | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| X-linked intellectual disability with hypogammaglobulinemia and progressive neurological deterioration syndrome | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Psychomotor regression, oculomotor apraxia, movement disorder, nephropathy syndrome | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  | 
| Amyotrophic lateral sclerosis type 1 | Is a | True | Chronic nervous system disorder | Inferred relationship | Existential restriction modifier |  |