Inflammatory and Infective Skin Disease
Recognise morphology and distribution, distinguish infection from inflammation and detect severe skin emergencies.
How to prepare for MRCP(UK) Part 1
Use the official likely question distribution to plan breadth, then connect mechanisms, patterns and investigations to one most appropriate answer.
Core concepts
Concept 1
Dermatological diagnosis begins with lesion morphology, distribution, symptoms and systemic context.
Exam cue: Describe before diagnosing.
Concept 2
Mucosal involvement, blistering, necrosis or systemic illness can signal a life-threatening reaction.
Exam cue: Check medicines, immune status and systemic features.
Risk pitfalls and guardrails
Calling every erythematous eruption infection.
Guardrail: Do not select an option merely because it is true; choose the one that best answers the exact stem and fits the full pattern.
Missing severe drug-related skin disease.
Guardrail: Do not select an option merely because it is true; choose the one that best answers the exact stem and fits the full pattern.
Memory anchors
What describes a rash?
Primary lesion, colour, surface, shape, border, distribution and associated symptoms.
What makes a rash an emergency?
Systemic toxicity, mucosal disease, blistering, skin pain, necrosis or rapid progression.
What supports cellulitis?
Unilateral warmth, tenderness, swelling and compatible systemic or portal-of-entry features.
Why review medicines in a rash?
Timing and phenotype may reveal drug allergy, photosensitivity or severe cutaneous reaction.
What follows suspected severe skin reaction?
Stop likely culprit medicines, stabilise, seek urgent specialist care and document the reaction.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
A 28-year-old woman has intensely itchy, symmetrical erythematous patches in the antecubital and popliteal fossae with excoriation and lichenification. What is the most likely diagnosis?
A 45-year-old man has sharply demarcated erythematous plaques with silvery scale on his elbows and knees and nail pitting. What is the diagnosis?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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