| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Phototherapy of newborn | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Photochemotherapy with tar and petrolatum | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Photodynamic therapy of subretinal lesion | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Light therapy | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Phototherapy - NEC | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Photodynamic therapy of skin | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| General actinotherapy | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Percutaneous photodynamic therapy of lesion of bile duct | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Light therapy for inflammation | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Photochemotherapy with petrolatum and ultraviolet B | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Photodynamic therapy of skin | Using energy | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Photosensitivity test | Using energy | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Broad band source phototest | Using energy | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Extracorporeal photopheresis | Using energy | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Psoralen and long-wave ultraviolet radiation test | Using energy | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Lesion provocation phototest | Using energy | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Photochemotherapy with tar and ultraviolet B | Using energy | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Percutaneous photodynamic therapy of lesion of bile duct | Using energy | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 2 | 
| Photodynamic therapy of subretinal lesion | Using energy | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 2 | 
| Monochromator phototest | Using energy | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Photochemotherapy with petrolatum and ultraviolet B | Using energy | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Photodynamic therapy of skin of whole body | Using energy | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Phototherapy of skin | Using energy | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Intermittent phototherapy | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Intermittent phototherapy | Using energy | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Photodynamic therapy of skin of whole body | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Photodynamic therapy of neovascular membrane of choroid | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Photodynamic therapy of neovascular membrane of choroid | Using energy | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Effect of exposure to light | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Photodynamic therapy of chorioretinal lesion | Using energy | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 2 | 
| Hair defect with photosensitivity and intellectual disability syndrome | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 2 | 
| Occupational phototoxic reaction to skin contact with exogenous photoactive agent | Causative agent | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 4 | 
| Welders' keratitis | Causative agent | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 2 | 
| Snow blindness | Causative agent | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 3 | 
| Photokeratitis | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Flash burn of eye | Causative agent | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Disseminated superficial actinic porokeratosis | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Photodynamic therapy of lesion of skin | Using energy | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Drug-induced photosensitivity | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 2 | 
| Drug-induced persistent light reaction | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 2 | 
| Phototoxic drug eruption | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 2 | 
| Ataxia, photosensitivity, short stature syndrome | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 2 | 
| Photoaggravation of disorder | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Photoaggravated rosacea | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Photoaggravated psoriasis | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Retinal light toxicity | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Intranasal phototherapy | Using energy | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Intense pulsed light therapy | Using energy | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Actinic keratosis | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Hypertrophic solar keratosis | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Bowenoid actinic keratosis | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Bowenoid actinic keratosis | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 2 | 
| Lichenoid actinic keratosis | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Acantholytic actinic keratosis | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Atrophic actinic keratosis | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Proliferative actinic keratosis | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Multiple actinic keratoses involving scalp | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Multiple actinic keratoses involving face | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Multiple actinic keratoses involving hands | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 2 | 
| Multiple actinic keratoses involving hands | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Multiple actinic keratoses involving lower limbs | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Multiple actinic keratoses involving lower limbs | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 2 | 
| Diffuse actinic hyperkeratosis | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Actinic keratosis of eyelid | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Multiple actinic keratoses | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Multiple actinic keratoses involving forehead and temples | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Multiple actinic keratoses involving forehead and temples | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 2 | 
| Pigmented actinic keratosis | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Hyperkeratotic actinic keratosis | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Polymorphous light eruption, papular type | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Polymorphous light eruption, papular type | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 2 | 
| Polymorphous light eruption, papulovesicular type | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Polymorphous light eruption, papulovesicular type | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 2 | 
| Polymorphous light eruption, diffuse erythematous type | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Polymorphous light eruption, diffuse erythematous type | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 2 | 
| Polymorphous light eruption, plaque type | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Polymorphous light eruption, plaque type | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 2 | 
| Polymorphic light eruption | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Polymorphic light eruption | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 2 | 
| Polymorphous light eruption, eczematous type | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Polymorphous light eruption, eczematous type | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 2 | 
| Juvenile spring eruption | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Juvenile spring eruption | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 2 | 
| Photokeratitis of bilateral eyes | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Photokeratitis of bilateral eyes | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 2 | 
| Intense pulsed light therapy of eyelid | Using energy | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Photodynamic therapy of chorioretinal lesion | Using energy | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Phototherapy skin rash | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Pain provoked by light | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Photokeratitis of left eye | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Photokeratitis of right eye | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Transient vision loss caused by light | Causative agent | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Phototesting of skin using solar simulator | Using | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Phototesting of skin using monochromator | Using | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Provocation phototesting | Using | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Phototesting of skin using solar simulator | Using energy | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Phototesting of skin using monochromator | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Provocation phototesting | Using energy | True | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier | 1 | 
| Photodynamic therapy of skin | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier |  | 
| Photodynamic therapy of skin of whole body | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier |  | 
| Other specified photodynamic therapy of skin | Using energy | False | Light, electromagnetic radiation | Inferred relationship | Existential restriction modifier |  |