6 possible reasons and how to treat it

The skin is considered to be the largest organ in the human body, and caring for it is as necessary as treating the symptoms that appear inside. As it is common for skin itching to be mild and short-lived, it can become something serious and difficult to live in if its causes are not identified in the short term.

An insect bite allergy and dry skin can also be considered a common cause, but when itching goes with redness, blemishes, pain, and other similar expressions, finding a dermatologist is the best way to find the right treatment.

To understand the main causes of itchy skin and what to do when it arises, Live well they consulted experts who commented on some of the situations:

skin infections

It can be caused by fungi, parasites or bacteria, which can cause injuries and inflammatory reactions, causing itchy skin. The most common are:

  • Mycoses: can affect any part of the body; skin candidiasis, the cause of which is the presence of fungus Candidamore common in the folds of the body, such as the breasts, hips, and armpits;
  • Scabies: A contagious disease caused by extensive itching and mites that cause more itching at night. Sarcoptes scabiei;
  • Herpes: with greater recurrence in the lips and genitals;
  • Impetigo: can cause pain with pus and crust.

Possible treatments: Your doctor may prescribe the use of antifungals, antibiotics, or antiallergics, depending on the microorganisms identified.


This is a genetic disease that can have a genetic or autoimmune cause, leading to a chronic allergic process. Some of them are:

  • Atopic: Attacks of pruritus and eczema occur, usually beginning in childhood, and may be associated with asthma or allergic rhinitis;
  • Seborrhea: It is more common on the skin and body.
  • Herpetiformis: has a higher recurrence in people with celiac or gluten intolerance;
  • Psoriasis: a chronic disease caused by the proliferation of skin surface cells;
  • Contact with skin irritants such as soaps, detergents, bleach, etc. They can also be caused by allergic mechanisms, such as allergies to earrings, perfumes, cosmetics or textiles.

Possible Treatments: Dermatologists should evaluate the characteristics of itchy lesions to prescribe moisturizers based on water, such as corticosteroids or anti-allergic medications.

allergic reactions

Insect bites are a common cause of itching and are easily detected, usually causing transient discomfort. Scars, regardless of their etiology, can also develop into itching, which is related to the repair process of damaged tissues.

Other common causes of itchy allergic reactions are related to excessive heat or sweating, pet dander, dust, medications, cosmetics, food, and so on.

Possible treatments: A medical approach is provided in each case, especially if there are severe symptoms, when the patient may need injectable drugs.

Dry skin

This in itself can be the cause of itching, which is common in the elderly and people living in cold climates, especially in the legs. Improper sun exposure can also damage the skin and cause dryness.

Possible treatments: To reduce these factors, it is recommended to use sunscreen, avoid long baths, use loofahs, prefer mild soaps and moisturize the skin after bathing.

systemic diseases

Some systemic diseases, such as hypothyroidism, can lead to increased dry skin and, as a result, itching. It is also important to remember that the liver, bile ducts, and gallbladder are the basic organs involved in the metabolism of bilirubin, and are involved in its production, excretion, and storage.

Therefore, if certain diseases endanger this bile stream, the pigment bilirubin can enter the bloodstream and accumulate.

In these cases, the skin may become itchy and yellow, as well as the whites of the eyes, the urine may darken and the stool may turn pale. Among the bile substances, some of them can cause itching by accumulating and stimulating the nerve structures in the skin. This itching can be intense, generalized, and uncontrollable.

Other systemic diseases that can cause itchy skin include viral infections such as ticks, chickenpox and dengue; HIV, as a result of autoimmune changes; and skin cancer itself, with growing wounds, does not heal and consequently itching.

Possible treatments: The causes of the itching should be addressed and identified by the doctor. However, keeping your skin always hydrated can help improve discomfort.

psychological illnesses

Factors such as stress and anxiety can exacerbate the itching sensation, and can cause damage to the skin by causing damage to the skin. Care and psychological support, in these cases, are necessary, as they may even turn into a “crazy cycle” in which the more the individual scratches and damages the skin, the more he feels the need to continue to scratch.

Itching can often interfere with sleep quality and study mood.

Possible treatments: The diagnosis requires research, as the causes can be combined with more complex and easily treatable diseases, which require specialized monitoring.

Sources: Camila Marinho Fariasgastroenterologist and digestive endoscopist, Professor of Medicine at Unipe (Centro Universitário de João Pessoa); Carlos MachadoA doctor at Unifesp (Federal University of São Paulo), a general practitioner and nephrologist specializing in preventive medicine; Carolina Milanezdermatologist, physician at Unioest (Western State University of Paraná), postgraduate in cosmology at Unifesp; Joanne Ferraz, dermatologist and lecturer at Unipe (Centro Universitário de João Pessoa); and Vanessa Pradodigestive tract surgeon and physician at the Digestive System Specialties Center (SP) at Nove de Julho Hospital.

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