Relief for Cold Sores, Canker Sores & Mouth Lesions in Charlotte NC

Got a painful cold sore or stubborn canker sore? OneSpotMD Urgent Care offers fast, expert treatment for cold sores, canker sores, and mouth ulcers — with prescription antiviral options and in-house diagnosis. Walk in or book online now for same-day relief at our Charlotte clinics.

When to seek care for Cold Sore or a Canker Sore

Symptoms to Watch For

Cold sores (fever blisters):

  • Small, fluid-filled blisters on the lip or around the mouth
  • Often start with tingling, itching, or burning
  • Caused by herpes simplex virus (HSV-1)

Canker sores:

  • Painful white or yellow ulcers inside the mouth (cheeks, tongue, gums)
  • Not contagious and not caused by a virus
  • Often linked to stress, irritation, or nutritional deficiencies

Mouth ulcers or lesions can also be caused by trauma, braces, burns, or infection. Let our providers take a look to get the right treatment started fast.

What Causes Cold Sores & Mouth Lesions?
  • Cold sores are caused by the herpes simplex virus (HSV-1) — and it’s very common. Over 95% of adults carry this virus, even if they’ve never had symptoms. Once infected, HSV-1 stays in your body for life and can flare with:
    • Stress
    • Illness or fever
    • Sun exposure
    • Hormonal changes (like menstruation)
  • Canker sores are not viral. They may be triggered by:
    • Mouth trauma (biting, dental work)
    • Stress or fatigue
    • Spicy or acidic foods

Vitamin deficiencies (B12, folate, iron)

Cold Sore & Canker Sore Timeline
Stage What Happens
Day 1 Tingling, itching, or burning on lip
Day 2–3 Blister forms
Day 4–5 Blister bursts, scab forms
Day 6–10 Scab heals, symptoms fade

Tip: The earlier you start treatment, the faster you feel better.

Can I Treat Cold Sores or Mouth Ulcers at Home?

For mild symptoms, you can try:

  • Canker sore creams or mouth ulcer gels (like benzocaine or hydrogen peroxide-based)
  • Canker sore patches that cover and protect the ulcer
  • Saltwater rinses or soothing mouthwashes

Popular OTC searches include:

  • “Best medicine for mouth sores”
  • “Canker sore in throat treatment”
  • “Mouth sore ointment”
  • “Blister in mouth treatment”

OTC remedies can help with discomfort — but if symptoms last, worsen, or keep coming back, you may need prescription care.

Still hurting? Visit OneSpotMD Urgent Care. We’ll diagnose the cause and start treatment — no appointment needed.

Insurance & Self-Pay Options

We accept most major insurance plans, including Medicare and Medicaid.
Uninsured? We offer clear and affordable self-pay pricing.

Frequently Asked Questions

Yes. OneSpotMD Urgent Care can prescribe Valtrex (valacyclovir) and other antivirals if your cold sore is viral.

Most cold sores are diagnosed visually, but we offer blood tests for confirmation if needed.

Start treatment with Valtrex as soon as symptoms begin — ideally within 24 hours.

How OneSpotMD Urgent Care Can Help

Most mouth sores and cold sores are diagnosed by exam — but we also offer HSV-1 blood testing if confirmation is needed. Treatment can begin right away even while results are pending.

  • Prescription antiviral medication: We offer Valtrex (valacyclovir) to shorten cold sore outbreaks.
  • Valtrex works best when started early — many patients feel symptom relief in 24–48 hours.
  • We’ll evaluate for other causes like trauma or vitamin deficiency
  • We’ll also recommend the right OTC remedies if appropriate

No insurance? View our self-pay pricing for transparent rates.

  •  Same-day antiviral treatment
  • Walk-ins welcome, open 7 days
  • Fast, friendly licensed providers
  • Short wait times, clean clinics
  • Two Charlotte locations
  • Insurance and self-pay accepted

“I had a painful blister on my lip and couldn’t eat — OneSpotMD gave me medication that started working in one day.”

  •  Same-day antiviral treatment
  • Walk-ins welcome, open 7 days
  • Fast, friendly licensed providers
  • Short wait times, clean clinics
  • Two Charlotte locations
  • Insurance and self-pay accepted

“I had a painful blister on my lip and couldn’t eat — OneSpotMD gave me medication that started working in one day.”

Visit us if:

  • Your sore lasts more than 5 days
  • You have frequent outbreaks
  • The pain is severe or interfering with eating/speaking
  • You’re unsure if it’s a cold sore, canker sore, or something else

Don’t wait — we can start treatment fast. Unless you have high fever, facial swelling, or difficulty breathing, urgent care is the right place.

Walk in or book online now.

OneSpotMD offers same-day care for cold sores, canker sores, and mouth lesions at both of our Charlotte clinics:

Plaza Midwood Clinic – 2017 Central Ave, Charlotte NC 28205
Serving patients in NoDa, Elizabeth, Commonwealth, and Uptown — near ZIPs 28205, 28204, 28203, 28202.

Steele Creek Clinic – 2114 Freeman Park Drive, Charlotte NC 28273
Off I-485 Exit 4 near Charlotte Premium Outlets — serving Steele Creek, RiverGate, Pineville, Berewick, and ZIPs 28273, 28278, 28134, and 29708.

Looking for cold sore or canker sore treatment in Charlotte? OneSpotMD Urgent Care offers same-day relief, with prescription antiviral meds like Valtrex and in-house diagnosis. Walk in or book online today.

  • Can urgent care prescribe Valtrex for cold sores?
  • How long do cold sores last?
  • What’s the best OTC treatment for mouth ulcers?
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