Back itching is mostly caused by skin diseases, but it is not necessarily because of this reason. There are many external reasons that can lead to back itching. Today, I will share with you the reasons for the itch behind, for your reference only!
1. Digestive system diseases are the first to see hepatobiliary diseases, including obstructive jaundice, hemolytic jaundice, etc. systemic skin pruritus is caused by the increase of bile salt concentration in serum and skin and the stimulation of nerve endings. Pregnant women will cause "pregnancy pruritus" due to endocrine disorder during pregnancy. The reason is that estrogen and progesterone rise during pregnancy and will disappear automatically after delivery.
2. About 10% of patients with endocrine system diseases "hyperthyroidism" and "hypothyroidism" have skin pruritus, but there are differences between them. The pruritus of "hyperthyroidism" appears earlier. Because the skin of "hyperthyroidism" is moist, it is mostly aggravated in summer; The pruritus of "hypothyroidism" appears later and develops slowly. The skin is more dry and rough, which is easier to induce pruritus in winter. Diabetes patients with elevated blood sugar can significantly reduce immunity and disease resistance, and are more susceptible to bacterial itch and skin infection.
* 3. Chronic nephritis patients with urogenital diseases, especially in the late stage (uremic period), are unable to expel in vitro due to the excretion of toxic wastes such as uremic toxins and urea, and they are left in the body in large quantities. Middle aged and elderly women often have vulvar pruritus due to irregular menstruation, increased leucorrhea, unclean vulva, ovarian lesions, or vulvar inflammation caused by vaginal trichomonas and fungal infection.
4. Hematological diseases polycythemia vera is mostly accompanied by systemic skin pruritus, some of which are manifested as burning and tingling, aggravated in summer, even after hot bath, and relieved half an hour later. What's wonderful is that aspirin can slow down this kind of pruritus. About 15% ~ 20% of patients with iron deficiency anemia have systemic or local pruritus. The pruritus can be relieved after iron supplementation and correction of anemia.
5. Central nervous system diseases such as neurasthenia, cerebral arteriosclerosis, brain edema and brain tumors will reduce the antipruritic threshold of central receptors and lead to skin pruritus. What's more wonderful is that when the brain tumor infiltrates to the bottom of the fourth ventricle, it will cause severe and lasting itching of the skin near the facial nostrils, and then develop to the whole face and neck.
6. Malignant tumor most tumors can cause systemic skin pruritus due to the stimulation of nerve endings by cancer cells and metabolites. In the early stage of gastric cancer and liver cancer, the whole body is often slightly itchy, which intensifies with the progression of cancer. Lymphoid cancers such as mycosis fungoides and Hodgkin's disease are accompanied by systemic skin pruritus. Rectal and colon cancer often shows anal pruritus; All kinds of leukemia, lung cancer and esophageal cancer are accompanied by generalized pruritus.
First, daily life should be regular. When spring comes, the Yang of human body tends to appear, the skin stretches, the peripheral blood supply increases, the secretion of sweat glands also increases, and the load of various organs of the body increases, while the central nervous system has a sedative and hypnotic effect, and the limbs feel sleepy. At this time, don't be greedy for sleeping in. It is disadvantageous for Yang Qi to rise. In order to adapt to this climate change, we should go to bed early and get up early in our daily life, and often take a walk outdoors, in the shady path and in the woods, so as to integrate with nature.
Second, the spirit should be sufficient. People's spiritual activities must respond to climate change. The time when the human body is most affected by the season is the time of transition. Modern medical research shows that bad mood can lead to stagnation of liver qi, dysfunction of nervous and endocrine system and decrease of immune function, which may lead to mental illness, liver disease, cardio cerebrovascular disease and infectious diseases. Therefore, in spring, we should pay attention to emotional health preservation and maintain an optimistic and cheerful mood, so as to make the liver Qi reach smoothly and play the role of disease prevention and health care. In spring, we should avoid anger, not to mention depression, and be broad-minded, open-minded and optimistic; The body should be relaxed, comfortable, natural and full of vitality.
Third, we should pay attention to regular exercise. In the next spring, we should strengthen the exercise and breathing of the body, so that we can get a good foundation for the exercise and breathing of the body in the next spring. Practice has proved that people who often take exercise in spring have strong antibiotic disease ability, quick thinking, not easy to fatigue and high work efficiency.
Fourth, pay attention to keep your body warm. As the weather gets warmer in spring, pathogenic bacteria and viruses grow and propagate, so infectious diseases such as influenza, measles, epidemic meningitis, scarlet fever and pneumonia are more likely to happen. The middle-aged and elderly people with hypertension and heart disease should pay more attention to cold prevention and warmth to prevent stroke, myocardial infarction and other diseases.
◆ drug-induced pruritus: it is often seen in old patients with weakness and multiple diseases and the cross use of multiple drugs. Many oral and injection drugs can cause pruritus in patients with skin allergy, which is more likely to occur when combined with drugs.
◆ infectious pruritus: in areas with poor sanitary conditions such as rural and mountainous areas, scabies infection often causes pruritus, which is limited to fingers, toes and ankles. In severe cases, it spreads all over the body and is difficult to cure.
◆ drug addictive pruritus: all drug addicts suffer from "delusional skin parasitosis", that is, the feeling of insects crawling under the skin in the illusion, which is manifested as uncomfortable skin pruritus, which is the skin hallucination after drug addiction.
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