What are the different causes of itching?
There are many different causes of itching, and these causes usually relate to the type of itching. Itching is usually classified as random or chronic. Random itching is usually caused by something landing on the skin. It can be something small, such as small insects or hair. Skin disorders, allergic reactions and some diseases usually cause chronic itching.
When the particles land on the skin, nerve receptors send signals to the spinal cord, and the spinal cord then alerts the brain to send the "scratch" signal. The impulse for scratches often comes from the need to get rid of the body of a foreign substance. This happens, for example, when a bug or a hair lock tickles on the skin. Scientists believed that the impulse to scratch came from the same receptors that cause pain pain, but eventually found that the impulses were completely different. The scratching of impulses causes an aggressive reaction while the impulses of pain cause aodět.
skin disorders that may be the causes of itching include psoriasis, eczema and dErmatitis. All these disorders usually include itchy rashes on the skin surface. It is believed that psoriasis is caused by chemical imbalance in the skin and can be genetic in its origin. Eczema is generally considered to be environmental factors.
Some of the most common causes of itching are not directly associated with skin disorders and may include dry skin and topical allergic reaction. Dry skin usually begins to peel off, which can irritate the skin and lead to itching. Dry skin can usually be treated with a humidifier. Allergens that are exposed to skin can often lead to itching. Poison Ivy and Poison Oak are some good examples, but an allergen that could cause itching differs in every individual.
The causes of itching may also include certain types of parasites such as lice and scabies. Lice is most common in the hair, but scabies can spread anywhere on the body. PArazites that cause scabies are microscopic and usually under the skin. Struggles and lice can be treated with over -the -counter medicines.
In rare cases, the causes of itching can spring from serious illness such as hepatitis C or liver disease. Pregnant women should probably see a doctor if they begin to suffer from persistent itching because it can indicate cholestasis, a condition that sometimes occurs late in pregnancy and can cause liver damage. It is probably good to see a doctor for itching, who does not respond to current treatment within seven days.