»	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

Chemicals blocking UVR

Table 3-35 Sunscreen Agents

UVA

UVB

Avobenzone, benzophenones (oxybenzone), ecamsule (Mexoryl SX), meradimate

PABA, padimate O, cinnamates, salicylates, octocrylene, ensulizole, Mexoryl XL (drometrizole trisiloxane)


		Salicylates: octisalate, homosalate, trolamine salicylate


		UVA & UVB blockers: Mexoryl XL, oxybenzone, titanium dioxide and zinc oxide

Table 3-36 Fitzpatrick Skin Types
	Type	Reaction to Sun Exposure
	Type I	Always burns	Never tans
	Type II	Usually burns	Rarely tans
	Type III	Rarely burns	Usually tans
	Type IV	Never burns	Always tans
	Type V, VI	Never burns	Always tans