Pronunciation: inâ²di-kÄâ²shÅ­n. Definition: The basis for initiation of a treatment for a disease or of a diagnostic test; may be furnished by a knowledge of the cause (causal indication), by the symptoms present (symptomatic indication), or by the nature of the disease (specific indication).
Anyhow, here is a list of some of the causes of itchy skin with no rash: 1  Dry skin. 2  Dry skin can be caused by cold weather and lack of moisturizing. 3  Scabies infection. 4  Poor blood circulation. 5  Iron deficiency. 6  Pregnancy. 7  Obstetric Cholestasis in pregnant women.
An individual may have itchy skin for several different reasons, including dry skin, rashes, internal disease, nerve disorders, irritations and allergic reactions and pregnancy, says Mayo Clinic. Skin conditions that cause itchiness, such as eczema, scabies, hives and chickenpox, often create bumps and blisters.