| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Photoptarmosis | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Other specified photocoagulation of retina for detachment | Using | False | Light | Inferred relationship | Some |  | 
| Photocoagulation of retina for detachment NOS | Using | False | Light | Inferred relationship | Some |  | 
| Disseminated superficial actinic porokeratosis | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Photodynamic therapy of lesion of skin | Using energy | True | Light | Inferred relationship | Some | 1 | 
| Drug-induced photosensitivity | Causative agent | True | Light | Inferred relationship | Some | 2 | 
| Drug-induced persistent light reaction | Causative agent | True | Light | Inferred relationship | Some | 2 | 
| Phototoxic drug eruption | Causative agent | True | Light | Inferred relationship | Some | 2 | 
| Ataxia, photosensitivity, short stature syndrome | Causative agent | True | Light | Inferred relationship | Some | 2 | 
| Photoaggravation of disorder | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Photoaggravated rosacea | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Photoaggravated psoriasis | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Retinal light toxicity | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Intranasal phototherapy | Using energy | True | Light | Inferred relationship | Some | 1 | 
| Intense pulsed light therapy | Using energy | True | Light | Inferred relationship | Some | 1 | 
| Actinic keratosis | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Hypertrophic actinic keratosis | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Bowenoid actinic keratosis | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Bowenoid actinic keratosis | Causative agent | True | Light | Inferred relationship | Some | 2 | 
| Lichenoid actinic keratosis | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Acantholytic actinic keratosis | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Atrophic actinic keratosis | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Proliferative actinic keratosis | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Multiple actinic keratoses involving scalp | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Multiple actinic keratoses involving face | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Multiple actinic keratoses involving hands | Causative agent | True | Light | Inferred relationship | Some | 2 | 
| Multiple actinic keratoses involving hands | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Multiple actinic keratoses involving lower limbs | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Multiple actinic keratoses involving lower limbs | Causative agent | True | Light | Inferred relationship | Some | 2 | 
| Diffuse actinic hyperkeratosis | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Actinic keratosis of eyelid | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Multiple actinic keratoses | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Multiple actinic keratoses involving forehead and temples | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Multiple actinic keratoses involving forehead and temples | Causative agent | True | Light | Inferred relationship | Some | 2 | 
| Pigmented actinic keratosis | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Hyperkeratotic actinic keratosis | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Polymorphous light eruption, papular type | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Polymorphous light eruption, papular type | Causative agent | True | Light | Inferred relationship | Some | 2 | 
| Polymorphous light eruption, papulovesicular type | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Polymorphous light eruption, papulovesicular type | Causative agent | True | Light | Inferred relationship | Some | 2 | 
| Polymorphous light eruption, diffuse erythematous type | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Polymorphous light eruption, diffuse erythematous type | Causative agent | True | Light | Inferred relationship | Some | 2 | 
| Polymorphous light eruption, plaque type | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Polymorphous light eruption, plaque type | Causative agent | True | Light | Inferred relationship | Some | 2 | 
| Polymorphic light rash | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Polymorphic light rash | Causative agent | True | Light | Inferred relationship | Some | 2 | 
| Polymorphous light eruption, eczematous type | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Polymorphous light eruption, eczematous type | Causative agent | True | Light | Inferred relationship | Some | 2 | 
| Juvenile spring eruption | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Juvenile spring eruption | Causative agent | True | Light | Inferred relationship | Some | 2 | 
| Bilateral photokeratitis of eyes | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Bilateral photokeratitis of eyes | Causative agent | True | Light | Inferred relationship | Some | 2 | 
| Intense pulsed light therapy of eyelid | Using energy | True | Light | Inferred relationship | Some | 1 | 
| Photodynamic therapy of chorioretinal lesion | Using energy | True | Light | Inferred relationship | Some | 1 | 
| Phototherapy skin rash | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Pain provoked by light | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Left photokeratitis | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Right photokeratitis | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Transient vision loss caused by light | Causative agent | True | Light | Inferred relationship | Some | 1 | 
| Light and ultraviolet-induced dermatosis | Causative agent | False | Light | Inferred relationship | Some |  | 
| Phototherapy skin rash | Causative agent | False | Light | Inferred relationship | Some | 4 | 
| Other acute skin changes due to ultraviolet radiation | Causative agent | False | Light | Inferred relationship | Some |  | 
| Laser light | Is a | True | Light | Inferred relationship | Some |  | 
| Ultraviolet radiation | Is a | True | Light | Inferred relationship | Some |  | 
| Tungsten light | Is a | True | Light | Inferred relationship | Some |  | 
| Hydroa vacciniforme | Causative agent | False | Light | Inferred relationship | Some |  | 
| Actinic prurigo | Causative agent | False | Light | Inferred relationship | Some |  | 
| Idiopathic photodermatosis | Causative agent | False | Light | Inferred relationship | Some |  | 
| Acute phototoxic reaction | Causative agent | False | Light | Inferred relationship | Some |  | 
| Solar pruritus | Causative agent | False | Light | Inferred relationship | Some |  | 
| Brachioradial pruritus | Causative agent | False | Light | Inferred relationship | Some |  | 
| Photoaggravation of disorder | Causative agent | False | Light | Inferred relationship | Some |  | 
| Photoaggravated psoriasis | Causative agent | False | Light | Inferred relationship | Some |  | 
| Photoaggravated rosacea | Causative agent | False | Light | Inferred relationship | Some |  | 
| PUVA phototherapy burn | Causative agent | False | Light | Inferred relationship | Some |  | 
| Sunlight | Is a | True | Light | Inferred relationship | Some |  | 
| Visible light | Is a | True | Light | Inferred relationship | Some |  | 
| Monochromator phototest | Using energy | False | Light | Inferred relationship | Some | 1 | 
| Photic retinopathy | Causative agent | False | Light | Inferred relationship | Some |  | 
| Broad band source phototest | Using energy | False | Light | Inferred relationship | Some | 1 | 
| Lesion provocation phototest | Using energy | False | Light | Inferred relationship | Some | 1 | 
| PUVA test | Using energy | False | Light | Inferred relationship | Some | 1 | 
| Extracorporeal photopheresis | Using energy | False | Light | Inferred relationship | Some | 1 | 
| Photosensitivity test | Using energy | False | Light | Inferred relationship | Some | 1 | 
| Visible light therapy | Using energy | True | Light | Inferred relationship | Some | 1 | 
| Local actinotherapy | Using energy | True | Light | Inferred relationship | Some | 1 | 
| Kromayer treatment | Using energy | True | Light | Inferred relationship | Some | 1 | 
| Phototherapy: sleep regulation | Using energy | True | Light | Inferred relationship | Some | 1 | 
| Phototherapy - NEC | Using energy | False | Light | Inferred relationship | Some | 1 | 
| Phototherapy: mood regulation | Using energy | True | Light | Inferred relationship | Some | 1 | 
| Photodynamic therapy | Using energy | True | Light | Inferred relationship | Some | 1 | 
| Modified Goeckerman regimen | Using energy | True | Light | Inferred relationship | Some | 1 | 
| Light therapy | Using energy | True | Light | Inferred relationship | Some | 1 | 
| Theraktin treatment | Using energy | True | Light | Inferred relationship | Some | 1 | 
| Mercury vapour lamp treatment | Using energy | True | Light | Inferred relationship | Some | 1 | 
| Bililite therapy with ultraviolet light | Using energy | False | Light | Inferred relationship | Some |  | 
| Light therapy for inflammation | Using energy | True | Light | Inferred relationship | Some | 1 | 
| General actinotherapy | Using energy | True | Light | Inferred relationship | Some | 1 | 
| Photochemotherapy | Using energy | True | Light | Inferred relationship | Some | 1 | 
| Phototherapy of newborn | Using energy | True | Light | Inferred relationship | Some | 1 | 
| Photochemotherapy with tar and petrolatum | Using energy | True | Light | Inferred relationship | Some | 1 |