Most itching is harmless and short-lived, caused by dry skin, allergies or insect bites. But when itching becomes persistent, spreads across the body, or comes with other symptoms, health experts say it may sometimes point to an underlying condition worth investigating — from liver disease to rare blood disorders.
Whole-body itching and nighttime flare-ups: two patterns doctors take seriously
Generalized itching that affects large areas of the body without any visible rash or skin change is one of the patterns medical experts flag most often. Rather than a skin disorder, this type of itching can sometimes reflect an internal condition — including liver disease, kidney disease, thyroid disorders, iron-deficiency anemia, diabetes, or certain blood disorders.
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