What We Treat
Telehealth
What We Treat
Telehealth
About Us
- Features & Pricing
- For Organizations
A member asked:
Derm did koh test for fungus but didnt see any, then i told him i shaved with a razor less than an hour before and hd confirmed that does interfere with results by removing top layer of skin. is a biopsy another way of detecting fungus?
A doctor has provided 1 answer
If the lesion is still visualized with naked eyes then KOH test should be positive when scraping the lesion. Your shaving does not cause a false negative test, I think.
Answered 4/23/2023
0 views
Thank
Related Questions
A member asked:
Are skin scrapings around the face and hair line scalp just as helpful as biopsy of skin in diagnosis of dermatology types DLE SLE etc ?
A doctor has provided 1 answer
A member asked:
Facial neck skin condition biopsy no bacteria fungus raised bumps around eyes temples sides face brow scalp mouth chin excretes build up of sebum brownish and thickens 10 yrs. No meds help at all?
2 doctors weighed in across 2 answers
A member asked:
What can I use to heal cuts raw penis skin that cracked and peeled on and under glans years ago no STD been to derm had biospy glans hurts to evenwalk?
3 doctors weighed in across 2 answers
A member asked:
Have small rash on breast for 6 months now. Derma said no need for biopsy. Breast surgeon suggests skin biopsy. So should i follow the surgeon?
A doctor has provided 1 answer
A member asked:
I had a vulva biopsy on a mole, something went wrong, I have elevated skin that is painful- i was told it was not a keloid scar, but may need to see a plastic surgeon- what happened to result in this?
9 doctors weighed in across 6 answers
People also searched for:
Dermatologist did scrape test (KOH test) on assumed ringworm but didnt see fungus. However I had just shaved with a manual razor over the ringworm spot less than an hour before. Could this have affected the test by removing the top layer of skin?
Doctor did KOH scrape on potential fungal rash, it didnt detect fungus so now he feels it may be something else but I forgot to mention I shaved with a manual razor over the spot that morning barely an hour beforehand. Would that affect the results?
Derm today for full body. Showed him a light brown oval spot on back much smaller than eraser. I'd never noticed before. Shave biopsy but 'looked fine'. Underside clear skin.1 sev. Dys. Prev. Sound ok?
I had a dermatology appoint for discoloration in my lower legs that have nodules under the skin. They did a biopsy , what could they be ruling out?
Podiatrist wants to repeat KOH test as its negative for toenail fungus & thinks toenail looks like it has fungus despite that I said it looks like that due to nail trauma. The subungual hematoma improved in a year by itself. Should I do as he says?
Didn't find what you're looking for?
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your questionMore of what we treat
Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.
HIPAASecure
SOC 2 Type 2Certified
Get the HealthTap app
Video visit and message your doctor
