Callosity

The light callus is a thickening of the cornea (med .: hyperkeratosis ) as a reaction to ultraviolet radiation , especially UV-B radiation. When UV radiation hits the skin, cell division in the basal cell layer is accelerated, so that more cells migrate to the skin surface and the horny layer becomes thicker. This is now increasingly able to absorb UV-B light, the penetration of which into deeper skin layers is inhibited.

A light callus is fully developed after about 3 weeks of sunbathing and can form the skin's own sun protection , which corresponds to a protection factor of 5. If the solar radiation decreases, the additional cornea is quickly broken down again.

Individual evidence

1. ^ Lichtschwiele In: Roche Lexicon Medicine , p. 1108; 5th edition, Urban & Fischer 2003. ISBN 3437151509

This article is about a health issue. It is not used for self-diagnosis and does not replace a diagnosis by a doctor. Please note the information on health issues !