Dermatology

Dermatology Toolbox

STEP 1

Red-Flag Gate

Check these before using the rash navigator.

No red flag selected. If none are present clinically, continue to the rash navigator.
STEP 2

Rash Navigator

Use pattern recognition to generate a short differential, not a single automated diagnosis.

DOSING SUPPORT

Adult FTU Calculator

1 adult FTU โ‰ˆ 0.5 g. Estimate amount per application and total supply.

PER APPLICATIONโ€”
APPROX. GRAMSโ€”
TOTAL SUPPLYโ€”

Approximation for an average adult when the whole selected area is treated. Adjust for actual affected surface area, body size and product instructions; FTU tables may vary slightly between references.

TOPICAL STEROID

Potency & Site Helper

General site-based guide for eczema; verify age, product potency, diagnosis and local formulary.

Common potency examples
Very potentClobetasol propionate 0.05%
PotentBetamethasone valerate 0.1% (verify formulation/product)
ModerateClobetasone butyrate 0.05%
MildHydrocortisone 1%
QUICK REFERENCE

Common Primary-Care Patterns

Fast recognition, checks and escalation triggers.

๐ŸŒฟEczema / DermatitisโŒ„

Recognise

  • Dry, itchy, recurrent; flexural distribution is common in atopic eczema
  • Look for trigger/contact pattern, secondary infection and eczema herpeticum features

Clinic direction

  • Emollient + appropriate topical anti-inflammatory
  • Use FTU and site/potency helper
  • Review diagnosis/adherence if poor response
Escalate / review: Same-day specialist advice if eczema herpeticum is suspected; urgent escalation for eye involvement, systemic illness or rapidly worsening infection.
โญ•Tinea Corporis / Cruris / PedisโŒ„

Recognise

  • Annular plaque, active scaly edge, possible central clearing
  • Check feet/nails/groin as reservoir and prior steroid use

Clinic direction

  • Avoid steroid monotherapy when dermatophyte infection is likely
  • Keep area dry; review adherence and extent
  • Consider systemic pathway/review if extensive, recurrent, scalp or nail disease
Escalate / review: Review or refer if diagnosis uncertain, immunocompromised, treatment failure, scalp disease or extensive recurrence.
๐ŸŒ™ScabiesโŒ„

Recognise

  • Intense itch, often worse at night
  • Household/close-contact itch; webs, wrists, waistline and genital area are typical sites

Clinic direction

  • Treat household members and close contacts at the same time when scabies is diagnosed/strongly suspected
  • Wash/dry recently used bedding, clothing and towels on hot cycles when possible; seal non-washable items for several days
  • Explain itch can persist for several weeks after successful treatment
Escalate / review: Escalate crusted scabies, severe secondary infection, institutional outbreak or immunocompromised patient.
๐ŸŒŠUrticariaโŒ„

Recognise

  • Transient wheals, intensely itchy, lesions typically migrate
  • Check medication/NSAID, infection and allergy context

Clinic direction

  • First exclude anaphylaxis/angioedema
  • Non-sedating antihistamine pathway if uncomplicated
  • If recurrent >6 weeks, assess as chronic urticaria
Escalate / review: Emergency if airway symptoms, hypotension, wheeze, syncope or systemic anaphylaxis features.
๐ŸฏImpetigo / Infected EczemaโŒ„

Recognise

  • Honey-coloured crusts, pustules or wet erosions
  • Assess localised vs widespread and surrounding cellulitis

Clinic direction

  • Use NAG/local guidance when antimicrobial treatment is indicated
  • Hygiene and transmission counselling
  • Review if spreading or not improving
Escalate / review: Escalate fever, extensive disease, infant/high-risk host, spreading cellulitis, ecthyma or poor response.
๐Ÿ”ฅCellulitis / AbscessโŒ„

Recognise

  • Red, hot, swollen, tender skin; abscess may be fluctuant or draining
  • Check fever/systemic features, rapid spread, severe pain, entry point and comorbidity

Clinic direction

  • Consider marking the erythema margin for outpatient follow-up
  • A true abscess may require drainage rather than antibiotics alone
  • Use NAG/local protocol for antimicrobial decisions
Escalate / review: Refer/escalate if severely unwell, infection is near the eye/nose, spreading despite treatment, or there is concern for sepsis, orbital cellulitis, necrotising infection, septic arthritis or osteomyelitis.
โšกHerpes Zoster / HSVโŒ„

Recognise

  • Grouped vesicles; dermatomal unilateral pattern suggests zoster
  • Check onset, pain, immunocompromise and dissemination

Clinic direction

  • Eye/forehead/nose involvement needs urgent assessment
  • Consider antiviral pathway according to timing/risk
  • Give transmission advice while vesicles active
Escalate / review: Escalate ophthalmic involvement, dissemination, severe neurological features, pregnancy concern or immunocompromised patient.
โšชHypopigmented / Numb PatchโŒ„

Recognise

  • Differentiate depigmentation from hypopigmentation and look for fine scale
  • Check for definite sensory loss and peripheral nerve symptoms/signs

Clinic direction

  • Definite sensory loss in a pale/reddish patch or nerve enlargement with sensory loss/weakness raises concern for leprosy
  • Fine superficial scale may support pityriasis versicolor
  • Document sensory and peripheral nerve findings clearly
Escalate / review: Use the local leprosy referral pathway when cardinal signs are present or diagnosis is uncertain.
๐Ÿ”ดAcneiform EruptionโŒ„

Recognise

  • Comedones support acne vulgaris
  • Look for inflammatory papules/pustules, nodules, cysts and scarring

Clinic direction

  • Assess severity, pregnancy possibility and prior treatments
  • Use stepwise acne therapy/local CPG
  • Consider folliculitis if monomorphic itchy pustules
Escalate / review: Refer severe nodulocystic acne, scarring, major psychosocial impact or treatment failure.
๐ŸงฉPsoriasis PatternโŒ„

Recognise

  • Well-demarcated plaques with scale; extensor surfaces and scalp are common
  • Check nails, high-impact sites and symptoms suggesting psoriatic arthritis

Clinic direction

  • Assess body surface area, severity and impact
  • Use KKM psoriasis CPG for treatment pathway
  • Arrange specialist review when topical management is inadequate or disease is severe/extensive
Escalate / review: Generalised pustular psoriasis or erythroderma requires immediate same-day specialist assessment; refer significant joint symptoms or diagnostic uncertainty.
PATIENT COMMUNICATION

Copyable Counselling

Tap a card to copy a short explanation for patient instructions or notes.

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SetelDoc โ€” Primary Care. Simplified. Clinical support only. Use clinical judgement, examination findings, local formulary, KKM guidance and referral pathways.
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