| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Structure of cuticular layer of hair | Is a | True | Hair shaft structure | Inferred relationship | Existential restriction modifier |  | 
| Entire hair shaft | Is a | True | Hair shaft structure | Inferred relationship | Existential restriction modifier |  | 
| Structure of hair cortex | Is a | True | Hair shaft structure | Inferred relationship | Existential restriction modifier |  | 
| Structure of hair medulla | Is a | True | Hair shaft structure | Inferred relationship | Existential restriction modifier |  | 
| Electrosurgical epilation of eyelid | Procedure site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier |  | 
| Cryosurgical epilation of eyelid | Procedure site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier |  | 
| Epilation | Procedure site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier |  | 
| Correction of trichiasis by epilation with electrosurgery | Procedure site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier |  | 
| Epilation by forceps | Procedure site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier |  | 
| Correction of trichiasis by epilation with cryotherapy | Procedure site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier |  | 
| Cryosurgical epilation of eyebrow | Procedure site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier |  | 
| Epilation by electrolysis | Procedure site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier |  | 
| Epilation of eyebrow by forceps | Procedure site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier |  | 
| Electrosurgical epilation of eyebrow | Procedure site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier |  | 
| Epilation of eyelid | Procedure site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier |  | 
| Correction of trichiasis by epilation with forceps | Procedure site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier |  | 
| Epilation of eyelid by forceps | Procedure site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier |  | 
| Electrolysis of eyelash | Procedure site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier |  | 
| Epilation NEC | Procedure site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier |  | 
| Trichomalacia | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Symmetrical circumscribed allotrichia | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Pseudomonilethrix | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital wooly hair | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Disorder of hair shaft | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Crandall's syndrome | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Bamboo hair | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 2 | 
| Brittle hair | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Lamellar ichthyosis AND trichorrhexis invaginata syndrome | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 3 | 
| Trichonodosis | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Wooly hair | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Trichorrhexis | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Acquired progressive kinking of hair | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier |  | 
| Cicatrical trichiasis | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier |  | 
| Clastothrix | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier |  | 
| Hair abnormalities NOS | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier |  | 
| Genetic defect of hair shaft | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Photosensitivity with ichthyosis, brittle hair, impaired intelligence, decreased fertility and short stature syndrome | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Autosomal dominant familial wooly hair | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Autosomal recessive familial wooly hair | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Brittle hair-impaired intellect-decreased fertility-short stature syndrome | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Genetic abnormality of hair shaft | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Autosomal dominant familial wooly hair | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Autosomal recessive familial wooly hair | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Genetic defect of hair shaft | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Genetic abnormality of hair shaft | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Brittle hair-impaired intellect-decreased fertility-short stature syndrome | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Photosensitivity with ichthyosis, brittle hair, impaired intelligence, decreased fertility and short stature syndrome | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital wooly hair | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Autosomal dominant familial wooly hair | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier | 2 | 
| Autosomal recessive familial wooly hair | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier | 2 | 
| Congenital wooly hair | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier | 2 | 
| Brittle hair-impaired intellect-decreased fertility-short stature syndrome | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier | 3 | 
| Genetic abnormality of hair shaft | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier | 3 | 
| Genetic defect of hair shaft | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier | 3 | 
| Photosensitivity with ichthyosis, brittle hair, impaired intelligence, decreased fertility and short stature syndrome | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier | 3 | 
| Pili bifurcati | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Pili multigemini | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Keratosis palmoplantaris and arrhythmogenic cardiomyopathy syndrome | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Wooly hair and palmoplantar keratoderma with dilated cardiomyopathy syndrome | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier | 7 | 
| Clastothrix | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier | 3 | 
| Trichothiodystrophy | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier | 5 | 
| Clastothrix | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 2 | 
| Wooly hair with palmoplantar keratoderma syndrome | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 2 | 
| Trichodysplasia xeroderma syndrome | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Trichodysplasia xeroderma syndrome | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 2 | 
| Finding of presence of dermatophyte hyphae and spores outside of hair shaft | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 2 | 
| Acquired progressive kinking of hair | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Trichothiodystrophy | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Brittle hair-impaired intellect-decreased fertility-short stature syndrome | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 2 | 
| Photosensitivity with ichthyosis, brittle hair, impaired intelligence, decreased fertility and short stature syndrome | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 2 | 
| Keratosis palmoplantaris and arrhythmogenic cardiomyopathy syndrome | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 2 | 
| Trichothiodystrophy | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 2 | 
| White piedra | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Piedra caused by Trichosporon beigelii | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Black piedra | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Wooly hair and palmoplantar keratoderma with dilated cardiomyopathy syndrome | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 2 | 
| Skin fragility, wooly hair, palmoplantar keratoderma syndrome | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Pili annulati | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Onycho-tricho-dysplasia neutropenia syndrome | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 2 | 
| Pili torti | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 2 | 
| Pili torti-deafness syndrome | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 4 | 
| Pili torti with developmental delay and neurological abnormality syndrome | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 2 | 
| Sabinas brittle hair syndrome | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 2 | 
| Pohl-Pinkus hairs | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 2 | 
| Hair cast | Finding site | True | Hair shaft structure | Inferred relationship | Existential restriction modifier | 1 | 
| Hair abnormalities NOS | Finding site | False | Hair shaft structure | Inferred relationship | Existential restriction modifier |  |