Is the rash on your palms or soles?

Yes No Do you also have fever, sore throat or swollen lymph nodes? Yes No Are there painful blisters on your genitals, buttocks or mouth? Yes No Has a recent partner been diagnosed with any ST I? Yes No G

Does a rash on the palms and soles always mean syphilis?

No - but it is one of the most specific clues. Hand-foot-and-mouth disease, drug eruptions and a few autoimmune conditions can also involve the palms and soles. A simple syphilis blood test rules it in or out within days, and we always recommend testing in any sexually active adult with this pattern.

How soon after exposure can a rash from HIV or syphilis appear?

The acute HIV seroconversion rash usually appears 2 - 4 weeks after exposure. Secondary syphilis rash appears later - 6 - 12 weeks after the initial painless chancre, which itself shows up 10 - 90 days post-exposure.

Can I just use a steroid cream?

Not until the cause is known. Topical steroids can dampen the rash temporarily but will not treat the underlying STI and may delay the correct diagnosis. We confirm the cause first, then use targeted treatment.

Is the rash itself contagious?

Secondary syphilis lesions and herpes vesicles are both highly infectious through direct skin contact. Acute HIV is transmitted through blood and sexual fluids, not the rash itself. Avoid sexual contact until you have been reviewed.

How quickly can I be seen?

Same-day confidential appointments are standard. Your personal health concierge arranges the consult, blood draw and any lesion swabs in one visit, and walks you through results when they return.

Is the rash on your palms or soles?

Yes No Do you also have fever, sore throat or swollen lymph nodes? Yes No Are there painful blisters on your genitals, buttocks or mouth? Yes No Has a recent partner been diagnosed with any ST I? Yes No G

Does a rash on the palms and soles always mean syphilis?

No - but it is one of the most specific clues. Hand-foot-and-mouth disease, drug eruptions and a few autoimmune conditions can also involve the palms and soles. A simple syphilis blood test rules it in or out within days, and we always recommend testing in any sexually active adult with this pattern.

How soon after exposure can a rash from HIV or syphilis appear?

The acute HIV seroconversion rash usually appears 2 - 4 weeks after exposure. Secondary syphilis rash appears later - 6 - 12 weeks after the initial painless chancre, which itself shows up 10 - 90 days post-exposure.

Can I just use a steroid cream?

Not until the cause is known. Topical steroids can dampen the rash temporarily but will not treat the underlying STI and may delay the correct diagnosis. We confirm the cause first, then use targeted treatment.

Is the rash itself contagious?

Secondary syphilis lesions and herpes vesicles are both highly infectious through direct skin contact. Acute HIV is transmitted through blood and sexual fluids, not the rash itself. Avoid sexual contact until you have been reviewed.

How quickly can I be seen?

Same-day confidential appointments are standard. Your personal health concierge arranges the consult, blood draw and any lesion swabs in one visit, and walks you through results when they return.

STI Rash in Malaysia: Causes, Testing & Treatment

A new rash that appears on the palms or soles, spreads across the trunk, or shows as painful blisters on the genitals can be the first visible sign of an STI - most often secondary syphilis, acute HIV seroconversion, herpes or (less commonly) acute hepatitis B. A targeted blood and swab panel identifies the cause; most are highly treatable when caught early.

New unexplained rash on the palms, soles, trunk or genitals? Get tested today.

Book a confidential appointment

Secondary syphilis classically presents as a painless, symmetric rash on the palms and soles.

Normal vs abnormal

Usually normal

Transient flushing or heat rash that fades within hours
Mild contact reaction to a new soap, detergent or fabric
A few isolated acne spots that come and go

Get it checked

Painless reddish-brown spots on the palms or soles
Diffuse pink-red rash across the trunk with flu-like illness
Painful clustered blisters on the genitals, buttocks or mouth
Itchy hives appearing alongside fatigue, joint pain or jaundice
Any rash that follows a recent unprotected sexual exposure

Common causes

Secondary syphilis - copper-coloured spots on the palms and soles.
Secondary syphilis
A painless, often symmetric rash on the palms, soles or trunk appearing 6 - 8 weeks after the initial chancre. Curable with an in-clinic antibiotic injection.
Acute HIV - diffuse trunk rash with flu-like illness 2 - 4 weeks after exposure.
Acute HIV seroconversion
A diffuse pink-red maculopapular rash across the upper trunk 2 - 4 weeks after exposure, usually with fever, sore throat and lymph node swelling. 4th-generation HIV test confirms.
Herpes - grouped vesicles on a red base, typically painful or tingling.
Herpes (HSV)
Painful grouped fluid-filled vesicles on a pink base, often preceded by a tingling or burning prodrome. Diagnosed by PCR swab of a fresh lesion.
Acute hepatitis B - urticarial rash can accompany fatigue and jaundice.
Acute hepatitis B
Less common - itchy urticarial wheals or a serum-sickness rash during the acute phase, often with fatigue, nausea and jaundice. Hepatitis B serology confirms.
Non-STI mimics
Scabies, contact dermatitis, drug eruption, tinea cruris (jock itch) and viral exanthems can all mimic an STI rash. A clinical exam plus a focused STI panel distinguishes them.

When to see a doctor

Red flags

Any new rash following unprotected sexual contact in the past 8 weeks
Rash involving the palms and soles
Painful blisters or ulcers on the genitals, buttocks or mouth
Rash with fever, sore throat, swollen lymph nodes or jaundice
Rash that spreads rapidly or fails to settle within a week

Recommended tests

Syphilis serology (RPR + treponemal antibody) - repeat at 6 and 12 weeks if recent exposure
4th-generation HIV antigen/antibody test from 18 days post-exposure
HSV PCR swab of a fresh blister (not crusted lesion)
Hepatitis B surface antigen + core IgM
Full STI Essentials panel including chlamydia/gonorrhoea NAAT

Treatment pathway

Treatment depends on the cause: a single penicillin injection cures early syphilis, antivirals shorten and suppress herpes, acute HIV is referred immediately for combination antiretroviral therapy, and hepatitis B is monitored or treated based on serology. Your personal health concierge coordinates same-day review, testing, treatment, partner support and follow-up in one confidential pathway.

Self-check

Quick self-check

Did you have unprotected sex in the past 8 weeks?
Is the rash on your palms or soles?
Do you also have fever, sore throat or swollen lymph nodes?
Are there painful blisters on your genitals, buttocks or mouth?
Has a recent partner been diagnosed with any STI?

Medically reviewed by Dr. Jasvinderpal Singh, MD, FIFA Dip. Football Medicine, Cert. Men's Health (SMHS)

Last reviewed 1 May 2026 · Next review 1 November 2026

FAQ

Rash (palms, soles, trunk or genital) - frequently asked questions

Clear answers, written by our clinical team. Tap any question for its direct permalink, or reach out to your Personal Concierge for anything else.

5 questions answered

Does a rash on the palms and soles always mean syphilis?
No - but it is one of the most specific clues. Hand-foot-and-mouth disease, drug eruptions and a few autoimmune conditions can also involve the palms and soles. A simple syphilis blood test rules it in or out within days, and we always recommend testing in any sexually active adult with this pattern.
How soon after exposure can a rash from HIV or syphilis appear?
The acute HIV seroconversion rash usually appears 2 - 4 weeks after exposure. Secondary syphilis rash appears later - 6 - 12 weeks after the initial painless chancre, which itself shows up 10 - 90 days post-exposure.
Can I just use a steroid cream?
Not until the cause is known. Topical steroids can dampen the rash temporarily but will not treat the underlying STI and may delay the correct diagnosis. We confirm the cause first, then use targeted treatment.
Is the rash itself contagious?
Secondary syphilis lesions and herpes vesicles are both highly infectious through direct skin contact. Acute HIV is transmitted through blood and sexual fluids, not the rash itself. Avoid sexual contact until you have been reviewed.
How quickly can I be seen?
Same-day confidential appointments are standard. Your personal health concierge arranges the consult, blood draw and any lesion swabs in one visit, and walks you through results when they return.

Still have a question?

Your Personal Concierge replies within one business day - confidentially.

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References

Your personal health concierge

One dedicated contact coordinates testing, treatment, partner support and follow-up - discreetly and end-to-end.

Book a confidential appointment

Normal vs abnormal

Common causes

Secondary syphilis

Acute HIV seroconversion

Herpes (HSV)

Acute hepatitis B

Non-STI mimics

When to see a doctor

Recommended tests

Treatment pathway

Self-check

Quick self-check

Rash (palms, soles, trunk or genital) - frequently asked questions

Does a rash on the palms and soles always mean syphilis?

How soon after exposure can a rash from HIV or syphilis appear?

Can I just use a steroid cream?

Is the rash itself contagious?

How quickly can I be seen?

References