Measuring Adherence To Topical 5-Fluorouracil in a Clinic Population

Inclusion Criteria: * Any male or female 50 years of age or older with moderate to severe actinic keratoses of the face and anterior scalp diagnosed by a dermatologist will be eligible for participation. Exclusion Criteria: * Age less than 50. * Known allergy or sensitivity to topical Carac® in the subject. * Inability to complete all study-related visits. * Introduction of any other prescription medication, topical or systemic, for actinic keratosis while participating in the study. * Subjects should not receive surgical or cryotherapy while participating in the study. * Pregnant women, women who are breast feeding, or women of child bearing potential who are not practicing two acceptable methods of birth control