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Physics, Astronomy & Cosmology / Re: what organic substance/biofilm could stay on the skin for 9 years

« on: 18/09/2024 15:25:08 »

I fully get where you are coming from with medics not offering any answer(I too have been down that road-multiple weird symptoms that went on for years following what seemed to be a simple upper respiratory viral infection). Even though the medics are no help I am still very much against using chatbots for medical information. I have to admit I have never used these chatbots and I have no intention of ever doing so- I have seen a lot of rubbish produced and I have also noticed they seem to be highly suggestible. If I want info on any subject I will seek out a recognised textbook or up to date peer reviewed articles. I am aware of biofilms but I don't know much, still I can't imagine such a film resisting a simple scrubbing off. In addition any organism capable of living on the surface of one's skin would surely be open to culture in a microbiology lab. There is not a lot of nutrients on the skin surface and if an organism can live there it's nutritional requirements cannot be that demanding. Most important question: in what way does the affected skin differ from normal skin?

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Physics, Astronomy & Cosmology / Re: what organic substance/biofilm could stay on the skin for 9 years

« on: 18/09/2024 10:41:44 »

Different shampoos may have different ingredients but they all act in a similar manner. The surfactant is what does the business and while there are different surfactants and concentrations I think they would all be equally effective at solubilising oily substances. The only significant difference would be those that have medicinal ingredients such as selenium sulphide and ketoconazole for dandruff control.

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Physics, Astronomy & Cosmology / Re: Calculating the force of a falling object on concrete

« on: 20/08/2023 20:45:41 »

@Harry01

Welcome Back!

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Physics, Astronomy & Cosmology / Re: Calculating the force of a falling object on concrete

« on: 15/08/2023 10:10:26 »

And you need to take into account Young's modulus of the human body and the speed of sound in soft tissue. It's more of a squish than a bang. I think you can ignore the compressibility of concrete for a first-order approximation.

Sadly,  the Transport and Road Research Laboratory, the Motor Industry Research Association and the Institute of Aviation Medicine have plenty of models and real life data.

You won't reach terminal speed from 100m but you do need to correct for drag. E _impact< mgh, depending on clothing and posture.

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Physics, Astronomy & Cosmology / Re: Calculating the force of a falling object on concrete

« on: 15/08/2023 08:33:12 »

How do I convert that into a force in Newtons?

You divide it by a distance.

(Average) Force = weight times distance fallen divided by stopping distance.

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Physiology & Medicine / Re: Can a fungus be a parasite and what distinguishes the two?

« on: 19/04/2022 21:23:39 »

The skin itself was fine up until I used this product

I don't understand, surely it was not fine- or why would you have used the product?

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Physiology & Medicine / Re: Can a fungus be a parasite and what distinguishes the two?

« on: 19/04/2022 21:22:16 »

Sorry to clarify. If you don't think a contaminant in the vaseline could cause an ongoing skin condition.

Not one that would last this long.


Incidentally, Vaseline has an odour- a slight one but definite. It smells like mineral oil.

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Physiology & Medicine / Re: How do I remove/kill yellow fungus that has given me skin infection

« on: 19/02/2021 08:53:40 »

You aren't going to be happy with this reply but it's the only one you are likely to get (apart from spam).

You need medical advice from a doctor and or dermatologist (maybe a parasitologist and a mycologist).
Partly because they are the only ones who might be able to answer the questions but principally because they are the ones who can write prescriptions.
No competent practitioner is going to give you advice on the basis of a "consultation" over a discussion forum.

You might take some small comfort from knowing that someone I knew had "famous" feet- her feet appeared in some medical journal.
It had taken the doctors ages to workout that the cause of her problem was (iirc) a combination of athlete's foot and eczema.

Those are both common conditions but the combination is rare and hard to treat (essentially, the things you use to treat eczema damp down the immune system and make the fungal infection worse; but the antifungals irritate the skin and make the eczema worse.)

I am not saying I think you have the same thing.
What I am saying is that the doctors sometimes struggle to work out what's going on.

So you will have to persevere with them.

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Physiology & Medicine / Re: Can a dental problem lead to chest pain?

« on: 16/04/2020 11:12:55 »

If you get a blood infection from untreated dental problems, it will create severe problems throughout your body.

These days, we tend to forget that people once died from dental abscesses.

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Physiology & Medicine / Re: How do you remove an excessive amount of petroleum jelly from the skin?

« on: 11/03/2020 09:30:14 »

I know I'm late here but do seek out a Dermatologist and allow them to take samples to analyze like Bored said before. Good luck! There are skin conditions that can manifest in yellowish crusts, or patches of growth, even seemingly greasy ones. I guess etc.. Especially in warm damp areas. Try also cotton under garments or clothing that allow air circulation also.

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Physiology & Medicine / Re: How do you remove an excessive amount of petroleum jelly from the skin?

« on: 29/02/2020 11:34:03 »

Seems that from what everyone is saying that it's an unusual occurrence

No.
We are saying it is an impossible occurrence.

You need to get a sample of the yellow stuff analysed if you want to find out what's going on.