Relative humidity is the percentage or ratio of the amount of water vapor in a volume of air at a given temperature and the amount that it can hold at that given temperature. An amount of water vapor in warm air will result to a lower relative humidity than in cool air.ummary: 1.Humidity is the amount of water vapor in the atmosphere while relative humidity is one type of humidity. 2.Humidity is the water content of the mixture of water vapor and other elements found in the air while relative humidity is the percentage of water vapor in the air at a given temperature.
Actinic keratosis (AK) is a UV lightâinduced lesion of the skin that may progress to invasive squamous cell carcinoma. It is by far the most common lesion with malignant potential to arise on the skin. See the image below.
When we talk about Lichenoid keratosis, we are dealing with a skin problem. Lichenoid keratosis is small skin lesion that usually appears on the arm, hands and the chest. Lichen kerotosis is usually a solitary lesion which appears similar to a solar lentigo (freckles). It is easy to recognize lichenoid keratosis lesion from its red to grey color.