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Dermatology: Acne, Eczema, Psoriasis & Rosacea • ICD-10-CM A53.9

Syphilis

Also known as: Lues

Audited by the DotMD AI Specialist Council • FDA DailyMed SPL: 2026-11-02 • ICD-10-CM A53.9 • 5 Linked .gov / PubMed Citations • Governance: Dr. Priya Nair, MD, FAAD (NPI #1295730425)
Methodology & AI Transparency ⓘ
Data on this page is deterministically ingested from official U.S. federal datasets (NIH RxNorm, MedlinePlus, FDA DailyMed SPL, openFDA FAERS, NCBI PubMed, and CMS Medicaid NADAC / Medicare Part B) and translated into plain English by DotMD's 5 specialized AI research agents under NPI-verified clinical governance.
At a Glance • Plain-English Clinical Summary

Syphilis Key Takeaways

Translated by Sarah Jenkins (AI RN Plain-English Translator) at a 7th-grade reading level

Transparent AI Research Council • Grounded on NIH / FDA / PubMed Data

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What Is Syphilis?

Syphilis is a sexually transmitted infection (STI) caused by bacteria. It infects the genital area, lips, mouth, or anus of both men and women. You usually get syphilis from sexual contact with someone who has it. It can also pass from mother to baby during pregnancy. The early stage of syphilis usually causes a single, small, painless sore. Sometimes it causes swelling in nearby lymph nodes. If you do not treat it, syphilis usually causes a non-itchy skin rash, often on your hands and feet. Many people do not notice symptoms for years. Symptoms can go away and come back. The sores caused by syphilis make it easier to get or give someone HIV during sex.

Pathophysiology, Underlying Causes & Clinical Presentation

Pathophysiologically, Syphilis (ICD-10 A53.9) is driven by cutaneous immune skewing in Syphilis (A53.9: (Th2/IL-4/IL-13 in atopic); Cross-referenced with NIH MeSH (Syphilis), specialists in Dermatology: Acne, Eczema, Psoriasis & Rosacea monitor 25-Hydroxy Vitamin D in Syphilis (A53.9: & hs-CRP) to gauge tissue recovery.

Common Symptoms & Clinical Signs

  • • Presentation of Syphilis (A53.9): compromised epidermal barrier in Syphilis (A53.9: with dryness, fissuring,)
  • • Secondary Syphilis clinical sign: post-inflammatory hyperpigmentation, facial in Syphilis (A53.9: flushing, or pitted)
  • • Symptom flares in Syphilis correlating with Fasting Lipids & in Syphilis (A53.9: ALT (if systemic) deviation outside Within baseline reference limits (A53.9)
  • • Functional skin & dermatology impact requiring clinical dermatologic lesion in Syphilis (A53.9: morphology exam) evaluation (A53.9)

Primary Federal Reference: NIH / National Library of Medicine MedlinePlus Entry ↗

Syphilis Diagnostic Classification & Lab Markers

Metric Verified Benchmark Source
ICD-10-CM Diagnostic Code A53.9 WHO / CMS ICD-10-CM Clinical Classification
Clinical Specialty Hub Dermatology: Acne, Eczema, Psoriasis & Rosacea NIH MedlinePlus Health Topics
Diagnostic / Lab Marker: Fasting Lipids & in Syphilis (A53.9: ALT (if systemic) Within baseline reference limits (A53.9) Clinical Reference Target Range
Diagnostic / Lab Marker: 25-Hydroxy Vitamin D in Syphilis (A53.9: & hs-CRP) 25(OH)D 40–65 ng/mL (A53.9) Clinical Reference Target Range
Diagnostic / Lab Marker: Affected Body Surface in Syphilis (A53.9: Area (BSA /) Clear or Almost Clear (IGA 0–1) (A53.9) Clinical Reference Target Range
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FDA-Monographed Medications & Public Cash Price Reference for Syphilis

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Dr. Lin (AI PubMed Clinical Trial Lead)

Peer-Reviewed Human Clinical Trials & Meta-Analyses (Syphilis)

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Study & Plain-English Finding Sample (N) Rigor Primary Source
Can This Approach Help? Inside the Latest Research on Irritation potential of tretinoin gel microsphere pump versus adapalene plus

TGM 0.04% pump was associated with better facial tolerance as demonstrated by significantly less cumulative skin redness (P < 0.0001), dryness (P < 0.0001), burning/stinging (P < 0.0001) and itching (P < 0.0001) compared with...

Journal of drugs in dermatology : JDD • 2010-08-15 • Randomized Controlled Trial
Multi-cohort 82/100 PMID 20684151 ↗
Can This Approach Help? Inside the Latest Research on Clinically meaningful improvements in cutaneous lesions and quality of life

In this post-hoc analysis, nemolizumab-treated patients who had greater severe itching reductions also showed improvements in other eczema symptoms; severe itching alleviation appeared to be responsible for the improvements in...

The Journal of dermatological treatment • 2023-12-15 • Phase III Randomized Trial
Multi-cohort 82/100 PMID 36779675 ↗
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Syphilis Patient Community & “People Like Me” Threads

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