What causes itching skin?
Many different diseases, disorders and conditions can lead to itching skin. Itching can be a sign of inflammation, infection, or insect bites. More serious causes include an allergic reaction that may be associated with difficulty breathing.
Infectious causes of itching skin
Itching skin may arise from infectious diseases, such as:
Bacterial infection of the skin
Fungal infection of the skin, such as ringworm
Parasites, insects and arachnids that can cause itching skin
Itching skin can be due to numerous insects, parasites or arachnids that bite the skin or burrow in the skin including:
Allergic causes of itching skin
Drug, animal, food, and other environmental allergens can lead to itching skin including:
Allergic contact dermatitis, such as an allergy to latex
Irritant contact dermatitis, such as from poison ivy
Medication allergy, such as from penicillin
Scabies (allergic reaction to mite bites)
Autoimmune or inflammatory causes of itching skin
Autoimmune and inflammatory causes of itching skin include:
Other causes of itching skin
Various other causes of itching skin include:
Life-threatening causes of itching skin
In some cases, itching skin may be a symptom of a serious or life-threatening condition that should be evaluated as soon as possible or in an emergency setting. These include:
Allergic reaction (allergic purpura)
Hodgkin lymphoma (Hodgkin’s disease)
What are the potential complications of itching skin?
Complications of itching skin depend on the underlying disease, disorder and condition. Identifying and treating the underlying cause of itching skin is important to minimize any potential complications. In some cases, itching skin itself can also lead to complications, especially if the itch-scratch cycle is severe and leads to a breakdown of the skin.
Potential complications of itching skin
Over time, itching skin can lead to various complications:
Bacterial or fungal infection of the skin and surrounding tissues
Permanent change in skin texture (neurodermatitis)
Permanent skin discoloration
What is itching skin?
Itching skin is an inflammatory reaction of the skin. Itching is a symptom of a wide variety of mild to serious diseases, disorders and conditions. Itching is also called pruritus. Itching or itchy skin may or may not be associated with a rash. Itching skin can affect a small area of the skin or the full body, and it differs in severity, frequency and duration, depending on the underlying cause... Read more about itching skinintroduction
What other symptoms might occur with itching skin?
Itching skin may occur with other symptoms, depending on the underlying disease, disorder or condition. Body systems that are seemingly unrelated to the skin can also be affected. For example, you may have flu-like symptoms if the itching is due to infection or inflammation.