Infection can cause itchy skin?

Itchy skin: Itchy skin can be caused by: infections, systemic disease such as liver, thyroid, kidney and others, medications, anemia, internal malignancy, nerve disorders, pregnancy, and stress. See your doctor for blood work and a physical.

Not usually alone: Skin infections typically cause painful red swollen skin. Itching of the skin is usually caused by dermatitis and allergies.