Tim Hass shared his photo â with Tim Hass at Coon Fork Lake County Park. Â· December 20, 2016 Â· Augusta, WI Â·.
The possible causes of blanching of skin can range from a medical emergency to a temporary inconvenience. Shock is a medical emergency that causes blanching of the skin, as well as other signs and symptoms. The condition occurs when the body is not getting enough blood or oxygen, usually due to one of the following: 1  significant blood loss.  severe trauma.
What causes elbows, knees and certain areas of body skin to darken? One of the most common causes of darkened skin in these areas is contact or photocontact dermatitis. Contact dermatitis occurs when the skin is irritated by its contact with irritants or allergens. Photocontact dermatitis occurs when those irritants are stimulated by light (many allergens, such as fragrances, dyes and preservatives, are also photo-allergens, which can react with light to cause darkening).