PCDS vs iatroX (2025): The Diagnostic Atlas vs The Management Engine

Last reviewed: 2025-12-19 · Reviewed by Dr Kola Tytler, MBBS CertHE MBA MRCGP

At a Glance

Who is it for?

iatroX:GPs managing and prescribing for skin conditions.

Primary Care Derm Society (PCDS):GPs diagnosing and viewing skin conditions.

Why choose iatroX?

  • **Prescribing Ladders**: Clearly lists Step 1 vs Step 2 treatments (e.g., steroid potency).
  • **Referral Criteria**: Instantly checks if a 2-Week-Wait is needed per NICE.
  • **Holistic**: Checks interactions with the patient's other medications.
  • **Interactive**: 'What is the next step if topical retinoids fail?'

Why choose Primary Care Derm Society (PCDS)?

  • **Visual Diagnosis**: High-quality atlas of common UK presentations.
  • **Diagnostic Tables**: Specific pathways for 'The Red Face' or 'Itchy Skin'.
  • **Specialist Detail**: Written by GPs with a special interest (GPSIs) in Dermatology.
  • **Primary Care Focus**: Excludes rare hospital-only conditions.

Feature Comparison

CapabilityiatroXPrimary Care Derm Society (PCDS)
Core StrengthManagement & PrescribingVisual Identification
FormatText & AlgorithmsImages & Guidelines
AccessMobile / Web AppWebsite

In-Depth Analysis

Overview

The PCDS is likely the most visited website in UK General Practice for dermatology. Its value lies in verification: "I think this is Pityriasis Rosea, let me check the picture on PCDS." It gives GPs the confidence to make a visual diagnosis.

iatroX complements this workflow. Once you have the diagnosis, the challenge becomes management. Dermatology often involves complex "ladders" of treatment (e.g., emollients -> mild steroid -> potent steroid -> calcineurin inhibitor). iatroX excels at retrieving these ladders and guiding the prescribing decision.

The Perfect Workflow

  1. PCDS: Use the images to confirm the diagnosis is Psoriasis.
  2. iatroX: Ask, "What is the initial management for plaque psoriasis and when should I refer?" to get the step-by-step plan.

Use-Cases

What is this rash?

When to choose iatroX

  • Limited utility without visual input.

When to choose Primary Care Derm Society (PCDS)

  • **Winner.** Browse the A-Z image library to confirm the look.

How do I treat Acne?

When to choose iatroX

  • **Winner.** 'What is the first-line oral antibiotic and duration?' -> Instant plan.

When to choose Primary Care Derm Society (PCDS)

  • Good, but requires reading through dense text to find the dose.

Is this a 2WW referral?

When to choose iatroX

  • **Winner.** Checks the exact NICE NG12 criteria.

When to choose Primary Care Derm Society (PCDS)

  • Good guidance, but iatroX is faster for the checklist.

FAQs

Is PCDS free?
Yes, it is a free resource for healthcare professionals.
Does iatroX have dermatology images?
iatroX is text-based. For images, we recommend PCDS or DermNet NZ.