Rash on the skin is an inflammatory reaction, which can be a sign of allergy, dermatitis, eczema, neurodermatitis, parasitic diseases and other dermatological pathologies. It can also be a symptom of many systemic disorders in the body, for example, a rash after the use of drugs or exposure to toxins. Such a rash on the body itches very strongly, the itch is unbearable, which leads to laceration of the skin, linear bleeding combs.
Some types of rash occur exclusively during pregnancy: herpes or pregnant urticaria, prickly heat. At the same time, herpetic eruptions of pregnant women are not caused by the herpes virus, although they are similar to them, because they are based on an autoimmune reaction.
The most famous types of rashes are symptoms of various viral infections - measles, rubella, chickenpox, roseola in newborns. For each of these diseases, a rash is a characteristic feature in the diagnosis. It can also be a consequence of bacterial infections - scarlet fever, typhoid fever and typhus, syphilis at the second stage of development, staphylococcus, streptococcus and others. At the same time, fungal pathogens can also cause it.
If the rash on the body itches, and it is not associated with an allergic reaction, this may indicate signs of a wide range of skin diseases that are infectious upon contact. This is due to the possibility of transmission of infection by contact, which is most important for fungi, ticks, bacteria, viruses.
Recently, due to the use of chemical detergents and their direct contact with the skin, an allergic reaction has been important in the development of an itchy rash. If the rash on the hands itches after contact with a detergent, then it must be replaced, and for treatment proceed to the clinic. A typical range of drugs for the treatment of itchy rashes is the use of antipruritic, shakeable mixtures, histamine receptor blockers. It is necessary to completely exclude contact with a possible allergen. Since for the development of this reaction it is enough to collide with a certain substance only once, and even in the event of repeated contact, a rash develops on the body. It itches, regardless of the time of day, and weakens under the influence of drugs, as the skin heals, and the edema is neutralized.
Types of rash vary in appearance and nature of appearance: red, white, pink, swollen can appear in the form of nodules, spots, blisters, plaques. During the diagnosis, not only the appearance and location of morphological elements, but also the presence of other signs of concomitant diseases is taken into account. In the absence of extraneous symptoms of the disease, especially if the rash on the body itches in an adult, the most likely diagnosis is neurodermatitis, or eczema.
Correctly determine the cause of its appearance can only a practitioner who has the necessary knowledge for diagnosis. In order to find out what was the etiological basis, it is necessary to pay attention to all the symptoms that manifested along with the rash. In the case when the patient has characteristic symptoms of an infectious disease, the rash on the skin itches weakly, and destructive changes are more noticeable. The likely diagnosis is a staphylococcal or streptococcal infection. To determine the etiology in modern centers, it is possible to conduct bacterioscopy and culture with the determination of the antibiotic sensitivity of microflora.
Treatment of various types of rash should be prescribed only by a doctor who monitors the patient. In some cases, the rash passes by itself: this symptom is characteristic of rubella, chickenpox, syphilis. With an autoimmune or allergic etiology, steroids are prescribed, while finding fungi, therapy with amphotericin, terbinafine, and levorin.