A mysterious condition in which cloth fibers or other materials are reported to emerge from the skin doesn't appear to be infectious, a CDC team said after studying a possible cluster of cases in northern California.

A wide range of tests turned up no single bacteria, mycobacteria, virus, or parasitic explanation for what is being called Morgellons, according to Mark L. Eberhard, of the...

Most children and adolescents did not regularly use sunscreen despite reporting high rates of sunburn, data from a prospective cohort study showed. Half of a group of fifth-graders did not "often or always" use sunscreen when outdoors for prolonged periods of time. Follow-up interviews three years later showed that regular use of sunscreen had declined to 25%. For both surveys, a majority of the s...

The recently approved melanoma drug vemurafenib (Zelboraf) accelerates growth of nonmelanoma skin cancers but does not cause the secondary cancers, an international research team has concluded. In laboratory studies, the BRAF inhibitor vemurafenib stimulated mitogen-activated protein kinase (MAPK) signaling that led to increased proliferation of cells harboring RAS mutations, particularly...