NHS A-Z Guide: Conditions, Symptoms & Health A to Z

When something feels wrong and you’re weighing whether to book a GP appointment, the NHS Health A-Z is the kind of resource that deserves a spot in your bookmarks. It’s the official UK health encyclopedia available 24/7, covering conditions, symptoms, medicines, tests, and treatments in plain language. This guide walks you through what it offers, how to navigate it quickly, and where regional variations fit in.

Primary NHS Resource: www.nhs.uk/conditions/ · Health A-Z Coverage: Conditions, symptoms, medicines, tests, treatments · Scottish NHS List: nhsinform.scot/illnesses-and-conditions/a-to-z/ · England NHS Topics: www.england.nhs.uk/ourwork/a-to-z/ · NHS Writing Guide: service-manual.nhs.uk/content/a-to-z-of-nhs-health-writing

NHS A to Z disease conditions

The NHS Conditions A to Z serves as the backbone of the NHS online health information. It lists common health conditions with their symptoms and treatments, organized alphabetically for quick reference (NHS UK). Each condition page follows a consistent structure: what it is, symptoms to watch for, causes, treatment options, and when to seek medical help.

Symptoms and treatments

The NHS Health A to Z covers conditions, symptoms, medicines, tests, treatments, and advice on when to get help (NHS UK). The guide includes practical resources like the FAST test for stroke: Face drooping, Arm weakness, Speech difficulty, Time to call 999 (Meads Medical Centre). Acting F.A.S.T. as soon as stroke symptoms present themselves can not only save lives but potentially limit long-term effects.

How to access

The NHS Conditions A to Z connects you to the health information and services you need when you need it (NHS UK). Multiple GP practices, including The Wand Medical Centre and Glebe Family Practice, link directly to NHS A-Z for patient self-diagnosis of non-serious conditions (The Wand Medical Centre). The resource is available 24/7 for health info before GP contact, in clear easy-to-read language.

Symptoms A to Z

The NHS Symptoms A to Z addresses pain, stomach problems, skin symptoms, causes, treatments, and actions you should take (NHS UK). This section helps users identify what might be wrong based on how they feel, rather than by searching for a specific diagnosis first.

Finding symptoms

The NHS Health A-Z guide covers conditions, symptoms, treatments, searchable by body part, subject, or A-Z menu (Meads Medical Centre). This flexibility makes it easier for people who don’t yet have a diagnosis to start exploring their concerns. The NHS Symptoms A-Z guides through common indicators like pain types, directing users toward relevant condition pages or actionable advice.

Related conditions

When you search a symptom, the NHS Symptoms A to Z links to related conditions that match your description. This creates a logical pathway from “my head hurts” to potential causes and appropriate next steps. The guide also clarifies when symptoms warrant emergency action versus self-care at home.

Medical conditions list A-Z

Scotland maintains its own NHS Inform A-Z covering illnesses and conditions, organized alphabetically with detailed information on causes and treatments (NHS Inform Scotland). Northern Ireland similarly operates through Nidirect, offering a Health conditions A-Z searchable by condition, symptom, or letter (Nidirect).

Common illnesses

The NHS conditions list covers major illness categories including cancer, heart conditions, HIV, and flu (Nidirect). Each entry provides verified, medically reviewed content that meets NHS standards. The British Association of Dermatologists offers a comparable A-Z for skin conditions, though NHS A-Z serves as the generalist resource covering all body systems (BAD Patient Hub).

NHS Inform list

The NHS Inform A-Z for Scotland aligns with NHS England content but includes Scotland-specific services and pathways. The resource is regularly updated with information about health conditions, symptoms, and medicines (BelfastGP). This consistency ensures users across the UK receive authoritative guidance regardless of which portal they access.

Symptom checker NHS

While the NHS does not offer an interactive symptom checker chatbot, the Symptoms A to Z functions as a structured symptom navigator. It helps users work through common indicators like pain types, digestive issues, and skin changes to identify potential causes and appropriate responses (NHS UK).

How it works

The NHS Symptoms A to Z addresses pain, stomach problems, skin symptoms, causes, treatments, and actions in an organized, searchable format (NHS UK). You select your symptom or body area, then browse through possible explanations before drilling into specific conditions. The resource includes clear guidance on when self-care is appropriate, when to call 111, and when to seek emergency help. The NHS A-Z supports self-help at home, mental health, and pregnancy information alongside physical health topics (BelfastGP).

UK versions

Regional NHS portals adapt the symptom navigator for local use. Nidirect provides a Health conditions A-Z searchable by condition, symptom, or A-Z letter for Northern Ireland residents (Nidirect). England, Scotland, and Wales primarily use nhs.uk, though individual GP practices like Alton Surgery provide their own portals linking to NHS A-Z with additional seek-help guidance (Alton Surgery).

100 most common medical conditions

The NHS A-Z does not publish a definitive “top 100” list, but its alphabetical structure effectively surfaces the most common health concerns people search for. Community resources like MyHSN compile lists of common illnesses like abdominal aortic aneurysm with plain-language descriptions (MyHSN), though these lack the medically reviewed depth of NHS content.

List overview

The NHS Health A-Z includes tests, screening, surgery, and procedures sections alongside condition-specific pages (NHS UK). This comprehensive coverage means the resource contains far more than 100 conditions—it provides ongoing reference material across all major health categories. GP practices use NHS A-Z for treatment information and self-diagnosis support, demonstrating its breadth in clinical settings (The Wand Medical Centre).

Quick access

For quick access to the most common conditions, navigate directly to the A-Z letter that matches your concern. The NHS Conditions A to Z lists health conditions with symptoms and treatments organized for fast lookup (NHS UK). Each condition page links to related topics, allowing you to explore interconnected health information efficiently.

How to use NHS Conditions A to Z

Five practical steps get you the most from the NHS A-Z resource.

• Start at the main portal: Visit nhs.uk/conditions/ for the Conditions A-Z landing page, or nhs.uk/symptoms/ if you don’t yet know your diagnosis.
• Search by letter or keyword: Browse alphabetically by clicking a letter, or use the search function to type your condition or symptom directly.
• Read the condition page: Each entry follows the same structure: overview, symptoms, causes, diagnosis, treatment, and when to seek help. Focus on the sections relevant to your question.
• Check the “When to get help” section: Every condition page ends with guidance on whether self-care suffices, when to call 111, or when to dial 999 for emergencies.
• Use regional portals if applicable: Scottish residents should check nhsinform.scot; Northern Ireland residents should use nidirect.gov.uk for locally tailored pathways.

The practical steps above give patients a systematic approach to navigating NHS A-Z, reducing unnecessary GP appointments while ensuring appropriate care pathways are followed.

The NHS website connects you to the health information and services you need when you need it.

— BelfastGP (General Practitioner)

Acting F.A.S.T. as soon as stroke symptoms present themselves can not only save lives but potentially limit long-term effects.

— Meads Medical Centre (GP Practice)

It is regularly updated with information about health conditions, symptoms and medicines.

— BelfastGP (General Practitioner)

These patient information leaflets are specially written by the BAD to help you understand more about a particular skin condition.

— BAD Patient Hub (British Association of Dermatologists)

Related reading: Blood Pressure Chart by Age · Dangerous Low Blood Pressure for a Woman

The NHS A-Z, much like the detailed NHS A-Z directory, serves as the UK’s go-to resource for plain-language guides on conditions, symptoms, and treatments.

Frequently asked questions