To evaluate the safety and efficacy of PDT with blue light and topical Levulan in the treatment of actinic cheilitis.

The study will consist of a screening visit, up to three scheduled treatments, and two scheduled office visits. There can be a three-day window period for each scheduled visit in order to accommodate the subject's schedule and unforeseen scheduling conflicts.

1. Visit 1 (Screening): Subjects can be screened for the study up to two weeks before Visit 2 (Baseline). During screening, the study will be reviewed, written informed consent obtained, and eligibility confirmed. If applicable, the washout from prohibited medications or treatments will be determined at this visit.
2. Visit 2 (Baseline): Following signed, written informed consent and confirmation of eligibility, all subjects will have their lips photographed. Medical history, dermatologic exam, urine pregnancy test (if applicable), review of concomitant medications, clinical evaluations, and tolerability assessments will be performed at this visit. Study medication application to clean skin will be followed by a 90 minute incubation period under occlusion. Subsequently, patients will be exposed to blue light therapy for 16 minutes and 40 seconds. Post-therapy assessments will be performed afterwards, as well as education on appropriate sun protection methods.
3. Visits 3-4: Subjects will return every six weeks for up to two additional treatments. Treatment will be discontinued once the patient has achieved clinical clearance. Tolerability assessments, study medication application, blue light therapy, post-therapy assessments, and photographs will be performed.
4. Visit 5-6 (End of Study): Subjects will return 12 and 24 weeks after the last treatment for clinical evaluations, tolerability assessments, and photographs.

Inclusion Criteria:

• Must be able to understand and voluntarily sign an informed consent form
• Must be male or female ≥ 18 years of age at the time of consent
• Must be able to adhere to the study visit schedule and other protocol requirements
• Must have a diagnosis of actinic cheilitis by histopathological evaluation of biopsy specimen or clinical presentation

Exclusion Criteria:

• Inability to provide voluntarily consent or mentally incompetent
• Active herpes labialis lesions
• Subjects with any condition which places the subject at unacceptable risk if he/she were to participate in the study, or confounds the ability to interpret data from the study
• Subjects with any other skin condition that might affect the evaluation of the study disease
• Pregnant or breastfeeding female subjects
• Subjects who have used any investigational medication within one month prior to study entry
• Subjects who have been previously exposed to PDT and/or topical Levulan therapy for the treatment of actinic cheilitis
• Subjects who have used local therapy (e.g. cryotherapy) or topical treatment (e.g. 5% fluorouracil) within three months of study entry
• Subjects who have used an oral photosensitizing drug (e.g. Declomycin) within six months of study entry
• Subjects who are currently using photosensitizing agents (e.g. thiazides, tetracyclines, fluoroquinolones, phenothiazines, and sulfonamides) because of the risk of augmented photosensitivity
• Subjects who are frequently exposed to ultraviolet radiation (e.g. lifeguards, construction workers, frequent sunbed users, etc.)
• Subjects with a history of cutaneous photosensitization, porphyria, hypersensitivity to porphyrins, or photodermatosis
• Subjects with a known hypersensitivity to Levulan
• Subjects who are immunocompromised

Twenty four patients were screened, but only 20 were included in the study and proceeded to the baseline assessment. Nine men and 11 women RECEIVED AT LEAST ONE TREATMENT.

Visits 2 (Baseline), Visits 3 (week 6), and Visit 4 (week 12), Visit 5 (week 24), Visit 6 (week 36)