Causes of itchy rash are: 1, the elderly hormone levels, such as sex hormone levels decreased, may be one of the causes of itching. Such as itchy skin in women during menopause. 2, age-related skin metabolic disorders, skin atrophy in the elderly, and lack of sebum moisturization, skin blood flow disorders, nutritional deficiencies, susceptible to the stimulation of hot and cold changes in the surrounding environment, inducing pruritus, that is, pruritus in the elderly. 3, abnormal thyroid function, hyper- and hypothyroidism can also occur itchy skin. 4, diabetes mellitus, diabetic patients due to absolute or relative insulin The patient’s skin is prone to dryness, making the patient experience itchy skin or insect crawling and other abnormal sensations. About 7% of diabetic patients with generalized or restricted itchy skin.5, pregnant women with itchy skin, healthy pregnant women in the middle and late stages of pregnancy, the occurrence of generalized itchy skin is mostly due to internal biliary stasis, clinically known as intrahepatic cholestasis of pregnancy. In addition, pregnant women often have itchy skin on the abdominal wall in late pregnancy, which is due to the overstretching of the abdominal wall with stretch marks and the stimulation of sensory nerve endings on the abdominal wall, not due to bile stasis, the symptoms are often mild and do not require treatment. 6, chronic renal insufficiency – uremia, the patient’s skin loses its luster, dry and flaky. As urea is discharged from sweat glands, it condenses into urea cream, which stimulates the skin and can cause uremic dermatitis, while making the patient feel oddly itchy; at the same time, increased parathyroid hormone in the patient’s body is also the cause of itchy skin. What are the symptoms of itchy rash? There are four types of itchy rash in the clinic, and different types have different symptoms: 1. Pediatric itchy rash (hebra itchy rash, early onset itchy rash, light itchy rash), mostly in childhood onset, the lesions begin mainly as red papules, corn to green bean size, but also can be a wind-blown or papular urticaria-like rash. The lesions start as red papules, corn to green bean in size, or as a rash or papular urticaria-like rash. Scratching may result in scars, crusts, or eczema-like changes. The extensor side of the limbs is the common site, but the back, head and face can occur. Self-perceived symptoms are intense itching, and pigmentation remains after the rash subsides. It can also recur. In a few patients, the rash continues into adulthood. The axillary and inguinal lymph nodes may be enlarged. 2, common itchy rash (simple itchy rash), most common in middle-aged men and women, the damage is arched circular papules, green bean to pea size, the top of the papules have tiny blisters, the surface of the blisters broken with a plasma crust, the damage appeared in batches, causing intense itching, due to long-term scratching can appear scratching, mossiness and pigmentation, a few cases after healing, leaving a dotted scar. The rash is usually found on the extremities of the limbs and the trunk and buttocks. The damage disappears naturally within a short period of time, but sometimes recurs. 3, nodular itchy rash (warty stubborn urticaria), the damage starts as a light red or red papule, and soon becomes a dome-shaped solid nodule, from pea to nail size, usually grayish brown or reddish brown. The surface of the lesion is keratinized, rough, warty, and firm to the touch. The nodules may also be scratched, resulting in blood scabs, scratches, and mossy lesions on the top of the nodules. The lesions often occur on the extremities, especially on the extensor side of the lower legs, but can also occur on the back or other areas. The nodules tend to be arranged longitudinally along the limbs. The disease is mostly seen in adults, with women being the majority. 4, pregnancy itch rash, often occurs in women in their second pregnancy, the damage appears in the third to fourth month of early pregnancy, or the last two months of pregnancy. It usually disappears on its own 3 to 4 weeks after delivery. The rash is usually found on the upper trunk and proximal extremities. The basic rash is an itchy papular rash, sometimes with papular eruptions, which may appear after scratching, scratch marks, blood scabs and hyperpigmentation. How is the diagnosis of itchy rash confirmed? Based on the fact that the rash is mostly erythematous, papular and nodular damage, occurring symmetrically in an arc, and most often on the extremities, especially the upper extremities, with intense itching, it is not difficult to diagnose. Pathological section examination reveals: mild hyperkeratosis and hyperkeratosis of the epidermis, hypertrophy of the spinous layer, occasional sponge formation and small blisters, edema of the connective tissue in the upper dermis, and perivascular lymphocytic infiltration. A nonspecific mossy tissue reaction was observed with epidermal hyperkeratosis, epidermal crest prolongation, intercellular edema, basal cell liquefaction, perivascular cell infiltration, and vasodilated pigmented areas showing pigment incontinence. Occasionally, increased eosinophils in the peripheral blood are seen. How is itchy rash treated? Topical treatment can be used clinically, with antipruritic and anti-inflammatory agents, such as glyburide lotion and various glucocorticoid preparations. Systemic treatment is also available: (1) Anti-allergic treatment with a combination or alternation of two or more antihistamines, supplemented by vitamin C, calcium and intravenous sodium thiosulfate. (2) For those with generalized rash and intense itching, procaine can also be used for intravenous closure. (3) For patients with neuropsychiatric factors, appropriate sedative-hypnotic drugs can be given to inhibit neuroexcitability and thus relieve symptoms, such as diazepam once a night. (4) For difficult cases can be short-term systemic use of glucocorticoids such as prednisone, 3 times a day, after the symptoms are relieved, gradually reduce the amount to stop. 3, physical therapy chaff bath, starch bath, sulfur bath and tar bath, etc. all make itching reduced; for difficult patients can try narrow-spectrum medium-wave ultraviolet therapy. Warm reminder: medication treatment is for reference only, please refer to the doctor’s orders for specific treatment. How to prevent itchy rash? The first thing you need to do is to take a look at the following information: 1. maintain a regular lifestyle, strengthen physical exercise, enhance physical fitness, and adapt to changes in heat and cold. 2. actively search for and remove the cause, treat chronic lesions, adjust gastrointestinal function, and exorcise intestinal parasites. 3. underwear and underwear should be kept clean, and underwear should be soft and loose, with cotton fabrics being preferred. The reason is that chemical fiber clothing is easy to produce static electricity, the body surface cells due to the stimulation of static electricity is easy to produce discomfort, so should avoid wearing chemical fiber clothing close to the body. 4, pay attention to adjust the gastrointestinal function, to light, vitamin-rich fresh vegetables and soy products is better; avoid tobacco, alcohol, chili peppers, strong tea, coffee and other stimulating food; keep the bowels open, so that the body accumulation of allergic substances out of the body in a timely manner. 5, because the causative factors of this disease The cause of the disease is complex and it is often difficult to determine the cause, which makes treatment difficult. It is advisable to try to find the cause of the disease and treat it at the root. Prevention of insect bites, correction of diarrhea and constipation and other symptoms of gastrointestinal dysfunction, and treatment of lesions are recommended. Pay attention to improving nutrition and hygiene. What are the dietary care measures for itchy rash? To treat nodular itchy rash diet should pay attention to avoid cold, sticky, hard, spicy food, at the same time can be used itchy rash diet: kelp green beans barley soup – materials: kelp 50 grams, green beans 100 grams, barley 50 grams, sugar appropriate amount. Production: wash and chop the kelp, and mung beans, barley with the boil until cooked, add sugar to mix, take in portions. Once every other day, for 7 days.