| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Hyperkeratotic eczema of palms and soles | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 5 | 
| Progressive palmoplantar keratoderma of Greither | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 3 | 
| Progressive palmoplantar keratoderma of Greither | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 4 | 
| Progressive palmoplantar keratoderma of Greither | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 5 | 
| Palmoplantar keratoderma transgrediens | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 3 | 
| Palmoplantar keratoderma transgrediens | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 4 | 
| Acroerythrokeratoderma | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 3 | 
| Acroerythrokeratoderma | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 4 | 
| Autosomal recessive epidermolytic ichthyosis (disorder) | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 1 | 
| Hyperkeratosis of vulva | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 1 | 
| Congenital palmoplantar and perioral keratoderma of Olmsted | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 1 | 
| Pachyonychia congenita syndrome | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 2 | 
| Pachyonychia congenita syndrome | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 4 | 
| Pachyonychia congenita type II of Jackson-Lawler (disorder) | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 2 | 
| Pachyonychia congenita type II of Jackson-Lawler (disorder) | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 4 | 
| Pachyonychia congenita type III of Schafer-Brunauer (disorder) | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 2 | 
| Pachyonychia congenita type III of Schafer-Brunauer (disorder) | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 4 | 
| Generalized peeling skin syndrome (disorder) | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 3 | 
| Hereditary skin peeling syndrome (disorder) | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 1 | 
| Acral peeling skin syndrome | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 1 | 
| Aquagenic palmoplantar keratoderma (disorder) | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 1 | 
| Aquagenic palmoplantar keratoderma (disorder) | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 2 | 
| Knuckle pads, leukonychia, sensorineural deafness, palmoplantar hyperkeratosis syndrome (disorder) | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 6 | 
| Knuckle pads, leukonychia, sensorineural deafness, palmoplantar hyperkeratosis syndrome (disorder) | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 8 | 
| Hyperkeratosis of female perineum | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 1 | 
| Congenital ichthyosis, microcephalus, tetraplegia syndrome (disorder) | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 1 | 
| Congenital ichthyosis, intellectual disability, spastic quadriplegia syndrome (disorder) | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 1 | 
| Hypohidrosis, electrolyte imbalance, lacrimal gland dysfunction, ichthyosis, xerostomia syndrome (disorder) | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 1 | 
| KRT1-related diffuse nonepidermolytic keratoderma | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 1 | 
| KRT1-related diffuse nonepidermolytic keratoderma | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 2 | 
| Palmoplantar keratoderma, hereditary motor and sensory neuropathy syndrome (disorder) | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 1 | 
| Palmoplantar keratoderma, hereditary motor and sensory neuropathy syndrome (disorder) | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 2 | 
| Pigmentation defects, palmoplantar keratoderma, skin carcinoma syndrome (disorder) | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 2 | 
| Pigmentation defects, palmoplantar keratoderma, skin carcinoma syndrome (disorder) | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 3 | 
| Punctate acrokeratoderma freckle-like pigmentation | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 1 | 
| Punctate acrokeratoderma freckle-like pigmentation | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 2 | 
| Callus of forefoot | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 1 | 
| Generalized inflammatory peeling skin syndrome | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 1 | 
| Generalized non-inflammatory peeling skin syndrome | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 1 | 
| Hyperkeratosis of hindfoot (disorder) | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 1 | 
| Ichthyosis hystrix gravior (disorder) | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 1 | 
| Acquired ichthyosis due to paraneoplastic syndrome (disorder) | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 1 | 
| Drug-induced ichthyosiform reaction | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 2 | 
| Thermal keratosis | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 1 | 
| Talar callosity | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 1 | 
| Radiation keratosis following radiotherapy | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 1 | 
| Ectodermal dysplasia, hyperhidrosis, cutaneous syndactyly syndrome (disorder) | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 2 | 
| Ectodermal dysplasia, hyperhidrosis, cutaneous syndactyly syndrome (disorder) | Associated morphology | True | Hyperkeratosis | Inferred relationship | Some | 3 |