Injury
Ageing skin
Bedsores
Chemical burns
Drug abuse
Erosions and ulcers
Insects and mites
Irritant contact dermatitis
Marine wounds and stings
Skin problems from stomas
Jellyfish larvae: Sea bather's eruption
Sunburn
Wounds

Cold & heat
Chilblains
Cold urticaria
Frostbite
Raynaud phenomenon
Thermal burns

Toxicity
Algal bloom: Seaweed dermatitis
Scombroid fish poisoning
Heavy metal toxicity
Acrodynia (mercury poisoning)
Argyria (silver poisoning)
Arsenic

Immune reactions
Allergic contact dermatitis
Bee stings, food allergy: Anaphylaxis
Angioedema
Plants
Infections, cancer: Annular erythema
Viral infections: Erythema multiforme
Light pressure: Dermographism
Sunlight: Photosensitivity,
Polymorphous light eruption,
Actinic prurigo,
Solar urticaria,
Hydroa vacciniforme and
Photocontact dermatitis
Food allergy: Urticaria
Tattoo-associated skin reactions
Systemic diseases

Drug reactions
Anaphylaxis
Baboon syndrome
Drug hypersensitivity syndrome
Fixed drug eruption
Flagellate erythema
Drug-induced photosensitivity
Pseudoporphyria
Stevens Johnson syndrome
Toxic epidermal necrolysis
Toxicity of chemotherapy drugs r Urticaria

Miscellaneous
Aquagenic wrinkling
Dactylitis
Wells syndrome