| Interbreeding 50,000 years ago between two species of human may also have bequeathed a sunburn hazard called keratosis, addiction to nicotine, and a greater risk of depression. |
| Nail changes include pitting, transverse ridges, onycholysis, keratosis, yellowing, and destruction. |
| The development of actinic keratosis or malignant melanomas are among the possible serious consequences. |
| The submission also failed to provide long-term efficacy data on patients with actinic keratosis lesions treated with Metivix. |
| The lesion preparation, cream application, and illumination procedures were similar to the actinic keratosis studies described above. |
| Treatment limiting the appearance of ingrowing hair or keratosis pilaris. |
