appear Skin itching As a common symptom, it may seem simple at its beginning, but in reality it may reflect a wide range of disorders, starting from transient environmental factors and ending with complex internal or neurological diseases. The feeling of the need to scratch is not a disease in itself, but rather a signal from the skin, nerves, or internal organs that there is an abnormality that requires medical explanation.
Itching may be the first sign of an as yet undetected skin or internal disorder. According to a report published by the (Health) website, recurring itching for no apparent reason requires evaluation, especially if it is accompanied by changes in skin color, pattern of appearance, or severity over time.
Superficial causes directly related to the skin
- start over Causes of itching More common than the skin itself. Dry skin is the most common factor, and often occurs in dry environments or with excessive use of hot water or harsh detergents, as the skin loses its protective lipid layer and becomes rough and tight. This type often does not require complex treatment, but rather regular moisturizing and reducing irritants.
- Atopic dermatitis, a form of eczema, usually appears as… Inflamed red spots It may be accompanied by cracks or minor discharge. The condition is associated with a defect in the skin’s immune barrier, and is exacerbated by stress, irritating substances, or rough fabrics.
- As for allergic contact dermatitis, it results from contact with specific substances such as perfumes, metals, or some chemical compounds, and it often appears only at the site of contact, but its appearance may be delayed for hours or days.
- Exposure to poisonous plants, such as some types of ivy, leads to a clear allergic skin reaction, which appears in the form of pimples or blisters accompanied by redness and severe itching. Psoriasis is also a chronic condition resulting from an abnormal acceleration in the growth cycle of skin cells, which leads to thick patches covered with silvery scales.
Causes related to medications and internal organs
- Some medications may cause itching as a side effect, whether they are painkillers, antibiotics, or medications that affect… Nervous system. In these cases, the itching may be accompanied by a rash or dryness similar to eczema. Dealing with this type requires a medical review to adjust the dose or replace the medication without stopping it on its own.
- Chronic kidney disease is an important cause, as the kidney’s weak ability to eliminate toxins leads to the accumulation of substances in the blood that may deposit in the skin and cause constant itching, which often increases at night.
- The liver also plays a pivotal role in purifying the body, and when there is a defect in it, e.g Chronic infections Or its functions deteriorate, itching may appear in different areas of the body. Sometimes it is limited to the palms of the hands or soles of the feet, and sometimes it is widespread.
- Diabetes is associated with itching due to dry skin, poor circulation, and increased susceptibility to skin fungi, adding additional reasons for constant itching.
Neurological causes and less common conditions
- Some nervous system conditions may produce an itching sensation without an obvious skin problem. A clear example is shingles, where a certain virus causes inflammation of the nerves that appears as a painful rash followed by persistent itching after the rash disappears.
- Multiple sclerosis represents a neuro-immune condition that affects the central nervous system, and may lead to abnormal nerve signals that the patient feels, such as frequent itching or tingling, and often increases with heat, fatigue, or stress.
- In rare cases, itching may be an early sign of blood diseases or cancers such as bone marrow disorders or some types of lymphoma. In these cases, itching alone is not sufficient for diagnosis, but it appears among a group of other symptoms, such as fatigue, weight loss, or obvious skin changes.
