Generalised Itching

Overview

Generalised itching is itching that is widespread over the body with little or no visible rash. Unlike a localised itch from a bite or eczema, widespread itching without a skin explanation is often a clue to an internal medical condition rather than a primary skin problem. Because the cause is usually inside the body, generalised itching deserves a proper medical review. This page focuses on internal causes; itching with an obvious skin cause is covered on the Itching / Pruritus page.

Common internal causes

• Thyroid disorders — both an underactive and overactive thyroid can cause itching (see Thyroid Disorders).
• Kidney disease — uraemic itch is common in reduced kidney function (see Kidney Health).
• Liver disease and jaundice — bile salt accumulation causes itching, often worse at night (see Liver & Fatty Liver Health).
• Anaemia and iron deficiency — can cause itching and often hair loss (see Anaemia & Blood Problems).
• Diabetes — can cause dry, itchy skin and recurrent skin infections (see Diabetic Skin Problems).
• Medicines — many drugs can cause widespread itch.
• Internal infections, certain blood disorders, and, less commonly, other internal causes.

Evaluation and investigations

Evaluation combines the history (any weight change, tiredness, thirst, jaundice, medicines) with a general examination and blood tests — complete blood count and iron studies, thyroid function, kidney and liver function, blood sugar and HbA1c, and inflammatory markers. The aim is to find and treat the internal cause. See Abnormal Test Results.

Management overview

Management treats the underlying condition — correcting iron deficiency, treating thyroid disease, supporting kidney or liver disease, improving diabetes control, or reviewing medicines. Symptomatic measures (moisturisers, antihistamines, cool clothing) help while the cause is addressed. The itch usually settles as the underlying condition improves.

Warning signs — seek prompt care

• Generalised itching with jaundice, dark urine or pale stools — needs prompt assessment of the liver.
• Generalised itching with weight loss, night sweats or enlarged glands — needs prompt evaluation.
• Itching with worsening kidney function or new swelling — needs assessment.

How we help

Dr. Nayak looks beyond the skin for the internal cause of generalised itching, orders the right blood tests, and treats the underlying condition — referring to a specialist when kidney, liver or haematological disease is found. Consultations are available in-clinic in Bhubaneswar and over teleconsultation.

Related conditions and patient concerns

• Itching / Pruritus
• Dry Skin
• Thyroid Disorders
• Kidney Health
• Liver & Fatty Liver Health
• Anaemia & Blood Problems
• Diabetic Skin Problems
• Abnormal Test Results