Ultraviolet B (UVB) Light Therapy in the Treatment of Skin Conditions With Altered Dermal Matrix

Inclusion Criteria: * In good general health and between 10-80 years of age. * Willing and able to receive UVB, as directed in the protocol; make evaluation visits; follow protocol restrictions; and sign a written, witnessed, informed consent form. * Have a clinical diagnosis of keloid, scleroderma, old burn scars, granuloma annulare, or acne keloidalis nuchae. * No disease states or physical conditions that would impair evaluation of the test site * Must live within a reasonable driving distance of Ann Arbor, Michigan, and/or be able to attend all of the scheduled appointments during the study. Exclusion Criteria: * Have a history of photosensitivity (development of hives or bumps with exposure to light) or experience hypersensitivity in a UVB photo-provocation test. * Have participated in another investigational study in the past 4 weeks, taken oral therapy for skin condition, or on photosensitizing medications. * Pregnant, nursing, or planning to become pregnant during the study.