»	Disorders of Hair
	»	Non-Scarring Alopecias
		»	Alopecia Areata
		»	Trichotillomania
		»	Telogen Effluvium
		»	Anagen Effluvium
		»	Triangular Alopecia
		»	Androgenetic Alopecia
	»	Scarring Alopecias
		»	Central Centrifugal Cicatricial Alopecia (Hot Comb Alopecia)
		»	Lichen Planopilaris
		»	Dissecting Cellulitis of Scalp (Perifolliculitis Capitis Abscedens Et Suffodiens)
		»	Traction Alopecia
	»	Hirsutism
	»	Hair Shaft Abnormalities
»	Neuropsychocutaneous Disorders
»	Oral Diseases
»	Nail Diseases
»	Photodermatoses
	»	EM Spectrum and Biological Effects
		»	Electromagnetic (EM) Spectrum
		»	UVR-Induced Changes
	»	Endogenous Photodermatoses
		»	Polymorphous Light Eruption (PMLE)
		»	Actinic Prurigo (PMLE of Native Americans)
		»	Hydroa Vacciniforme
		»	Solar Urticaria
		»	Chronic Actinic Dermatitis
	»	Exogenous Photodermatoses
		»	Phototoxic Dermatitis
		»	Photoallergic Dermatitis
		»	Drugs causing Phototoxic and Photoallergic Reactions
		»	Phytophotodermatitis
	»	Chemicals Blocking UVr
	»	Fluoroscopy-Induced Chronic Radiation Dermatitis (FICRD)
»	References

Exogenous photodermatoses

Reaction due to combination of light (typically UVA) and photosensitizing chemical
Phototoxic (direct tissue damage) vs. photoallergic drug reaction; other light-related drug reactions include pseudoporphyria, lichenoid or SCLE-like reactions (see Chap. 7)