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Symptoms of disease - violation of skin sensitivity

Skin receptors are the primary receptors and represent the end of the dendrites of the sensory neurons, the body which are located in the spinal ganglia.

The temperature of the body is determined in part by the size of the skin's blood circulation. Standby is associated with increased blood flow in arterial network of the upper part of the papillary of the dermis, which leads to the heat. Vascular network of the dermis consists of surface and deep plexus arterioles and venules, connected communicative vessels. The blood flow in the surface of the network is governed by the tone of smooth muscles of the afferent arterioles. He can be reduced by improving their tone and by shunting of arterioles in the venous channels deep network through glomus bullock (arterioles, surrounded by several layers of muscle cells).

When the temperature decreases the blood flow in the papillary the dermis, the blood shunted from the surface plexuses, and, accordingly, reduced heat dissipation.

Skin sensitivity is subdivided classical physiology of the senses into four different types. Usually there is the reception:

1) pain;
2) heat;
3) cold;
4) touch (and pressure).

Which diseases there is violation of skin sensitivity

The importance of skin innervation best illustrate the spread of diseases in which the skin are destroyed nerves. The most typical disease - a Hansen's disease (leprosy), in which the defeat and destruction of the nerves leads to disfiguring deformations of the extremities, because patients in the course of many years are "invisible" injury.

The pain is biologically very important protective device.
Appearing under the influence of destructive in nature and strength of irritation, pain signals a danger for the body.

Skin sensations arise in irritation of receptors, located in
the skin in the form of the endings of nerve plexuses or in the form of special formations
- Taurus Meissner - located on the surface of the skin, devoid of hair, and
Taurus Pacini, located in the deep layers of the skin.

Temperature (thermal) sensitivity gives us a sense of heat and cold. This sensitivity is of great importance for the reflex
the regulation of body temperature.

If irritation cold receptors inadequate stimulus, for example
hot edge, they give cold feeling. This is the so-called paradoxical feeling of cold.

The sensation of touch and pressure are closely linked.

A characteristic feature of the sensations of touch and pressure (in contrast to,
for example, from pain sensations) is a relatively accurate their localization,
which is produced as a result of experience with the participation of view and muscle
the feelings.

Characteristic to the receptors of the pressure is their rapid adaptation.
Because of this, we usually do not experience as much pressure as such, how much pressure changes.

Tactile memory is the ability to remember the feeling from the touch of the various subjects. The Aviator game starts after a brief period during which bets can be placed, and immediately after that, the plane takes off into the air. A number is displayed above the machine that is continuously increased throughout the course of time. This occurs as the machine travels upward. In the event that you win, the amount that you wagered will be multiplied by this coefficient. In order to win, you need to keep pressing the "Cash Out" button until the plane blows up, which could happen at any given moment.

Which doctor should I contact if there is a violation of skin sensitivity

• Neurologist

Are you experiencing violation of skin sensitivity? You want to know more detailed information, or you need an inspection? Please sign up on reception to the doctor! Doctors will examine you, examine the external signs and help to determine the disease the symptoms, they will consult you and provide the necessary assistance. You can also call the doctor on the house.

Do you feel disrupted skin sensitivity? You should be very careful approach to your health in general. People pay not enough attention to the symptoms of the disease and don't realize that these diseases can be critically dangerous. There are many diseases that in the beginning didn't manifest in our body, but in the end it turns out, unfortunately, it have already been treated too late. Every disease has its own specific features typical symptoms - called symptoms of the disease. Definition of symptoms is the first step in the diagnosis of diseases in general. You just need a few times a year to be screened by a doctor, not only to prevent a terrible disease, but also to maintain a healthy spirit in a body and the organism in general.

Disorders by category

Disorders by alphabet

Map of the symptoms and the types of disorders is intended solely for educational purposes. We strongly recommend do NOT self-medicate; on all matters relating to the definition of the disease and ways of its treatment, contact your doctor. Md-tips is not responsible for the consequences of use information posted on the site.