Epidermis: The outer barrier of the organism

epdermis: The outer barrier of the organismThe top layer of skin is the epidermis. Here hair, skin glands and the nails began.

The epidermis is the outermost layer of the body. The feet and hands she is to thick to one to two millimeters, and forms a distinct stratum corneum, while in other places – measured according to body-about 0.5 to 1.0 millimeters. The epidermis consists mainly of water and is divided into clearly separable layers. This stratification is a very orderly process of differentiation of epithelial cells (keratinocytes) state. The layers of the epidermis are very dynamic, the new cells is based on stem cells and development and maturation of the cells are subject to many external and internal influences. For example, aware that the proliferation index in skin acht und zehn morning around the clock on the biggest and the evening between 20 und 22 clock is the lowest.

Cold allergy: crazy skin, Some tips to fight it

 Cold allergy When people feel cold easily and need lots of heat in order to feel good, we call them or write them at all Frier cats jokingly to a cold allergy. Hardly known, however, that there is actually an allergy to cold stimuli. The so-called cold allergy – the medical term for this is cold urticaria – is not a true allergic reaction with an antigen-antibody reaction, but is on physical allergies provoked or to the pseudo allergies counted.

In cold urticaria resolves the contact with cold objects or cold water or wind, the release of histamine , and at the place where the cold acting on the skin. Within minutes, it leads to redness, swelling and intense itching – a feeling that they had taken in nettles, hence the name “hives” (urticaria =) originates. At the beginning of the itchy skin reaction are redness and swelling of the skin is still relatively small and limited, but can spread significantly.

What is an allergy test?

If you are allergic, you are reacting to a particular substance. Any substance that can cause an allergic reaction are called allergens. To determine the specific cause of your allergies, your allergist / immunologist will do some tests are effective and safe on your skin, or sometimes in the blood, with tiny amounts of allergens that commonly causes problems.

Allergy tests are designed to gather specific information as possible in order to have your doctor determine what you are allergic you and provide the best treatment.