Patient's Query
Hello,
Ten weeks ago, I suddenly experienced sensitivity and pain in areas of skin, primarily on my legs and arms. This sensation resembled sunburn, although there was no visible redness. The symptom has persisted and varies in quality and intensity each day, from nearly unnoticeable in the morning to highly intense in the afternoon. It is not excruciating but rather annoying and disconcerting. Sometimes, it appears triggered by clothing, which can feel much rougher than it should.
My PCP found nothing of immediate concern and believes it could be some form of peripheral neuropathy. I have not experienced any loss of strength and do not have trouble walking. I do not have diabetes or any other diagnosed condition. The only current medication is Famotidine, which is being taken for heartburn. Laboratory tests conducted included routine blood tests and a thyroid hormone test, both of which yielded normal results. What type of neuropathy might this be? I am uncertain if there could be a genetic component, but my mother has described a similar type of neuropathic pain attributed to fibromyalgia.
Kindly advise.
Hello,
Welcome to icliniq.com.
I am here to help you with your health queries.
I read about your concern in detail.
I should be frank in saying that your problem, as per your description, appears to be complex. While there are small fiber neuropathies that can result in a burning sensation in the feet and hands, the rapid onset of your case is unusual. Please provide me with more details regarding the distribution of your sensory issue.
Looking forward to your response in order to help you.
Thank you.
Patient's Query
Hi doctor,
Thank you for the reply.
The burning sensations can occur on either side, but they do not consistently happen simultaneously. Their intensity fluctuates from one moment to the next. The most consistent pain is felt in the thigh area of my legs, although it can also extend to the tops of my feet. It affects the outer areas of my arms down to my hands, with no involvement of the plantar or palmar regions. It tends to develop in places where clothing exerts light pressure against the skin. The sensation does not increase when I recline or become more pronounced at night.
In the morning, the sensations are minimal, gradually building up as the day progresses. Interestingly, taking walks in the evening appears to alleviate it. I have not experienced any notable upper respiratory tract infections or diarrhea. I am a non-smoker, yet I am exposed to toxins daily due to my work in a laboratory, where I identify unknown samples from the oilfield. Although fume hoods are used, I still inhale small amounts of solvents like xylene, isopropanol, methanol, acetone, methylene chloride, and finely divided solids. As it happened, on the day this symptom appeared, I had been in the lab all day, exposed to somewhat larger quantities of these chemicals than usual. I am not sure if this could be related to the symptom.
Please help.
Hello,
Glad to have you back!
I am here to help you get the best medical advice.
I understand your concern.
The only thing I can comment on regarding your burning sensation is that its characteristics do not resemble those of small fiber neuropathies, which are not typically intermittent, migrating, or transient with fluctuations. Considering your exposure to various chemicals, the likelihood of an allergic-type reaction is higher. A potential approach to test this theory is to take an over-the-counter antihistamine drug for five days.
If a significant response occurs, we may associate it with an allergic reaction. If the mentioned treatment fails, a neurological evaluation, including a brain MRI (magnetic resonance imaging) and EMG (electromyography) and NCS (nerve conduction studies) assessment, will be necessary. Meanwhile, seeking consultation from a dermatologist could also prove beneficial. I apologize for not being able to provide you with more precise guidance or a more definitive differential diagnosis.
I hope you are satisfied with my answer.
For further queries, you can consult me at iCliniq.
Thank you.
Patient's Query
Hello doctor,
Thank you for the reply,
I have been taking an OTC antihistamine and it seemed to improve my pain symptom even while at work for the first two days. With two more days at home I continued to improve. Then over the last two days at work the “phantom sunburn” symptom returned. Meanwhile I did consult a dermatologist who seemed very sure that some kind of allergic sensitization is occurring at work, even advising me to find work outside of the lab environment for at least two weeks if not permanently. But the symptom does not always get better just because I leave work and return home. My PCP wanted to wait a full six months before going any further trying to figure out this problem. What would you advise?
Hello,
Welcome back to icliniq.com.
The dramatic response to antihistamine confirms that what you are experiencing is a kind of allergic reaction. I agree with your dermatologist. The best treatment for allergic reaction is to avoid the allergen. It may be a reaction to a specific chemical compound in your lab or even to one of your personal protective equipment. By the way, I am now confident that your problem is not neurologic. My recommendation is aligned with your dermatologist: a transient leave from work and continuation of the antihistamine. If the symptoms improve but reoccur in your return, and you have no option but continue this job, then you need to consult with an allergic reaction sub-specialist to find the allergen and start the process of desensitization, if possible.
Patient's Query
Hello doctor,
Thank you for the reply,
On the chance that this does not have to do with workplace allergens, but from what you wrote earlier you were saying that the changing locations, waxing and waning of the pain, etc. Was not typical of peripheral neuropathies, and more characteristic of something wrong in CNS. I am just trying to get a sense of how common or uncommon this symptom is and how concerned I should be about it. Would the brain scan and NCS still be advisable to rule out any CNS issues? And finally do you have any recommendations for managing the pain, as it can get intense sometimes. I have tried some OTC medicine but it does not seem to have much effect.
Hello,
Welcome back to icliniq.com.
Considering the response of your symptoms to antihistamine, there is nearly no possibility of any relationship of such sensation to CNS. In general, and not related to your case, some CNS problems can cause such a migratory or transient paresthesia sensation, including sensory aura of migraine, simple seizure with sensory symptoms, and some demyelinating CNS disorders. I frankly do not think that any of them be attributable to you. For drug recommendation, the best drugs for dysesthesia are not OTC. For example, Gabapentin could be a good choice but needs prescription. By the way, I still think that you should be treated by a dermatologist or sub-specialist of allergy.
I hope this helps. Thank you.
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Answered byDr. Seyedaidin Sajedi
Medically reviewed byiCliniq medical review team
Same symptoms don't mean you have the same problem. Consult a doctor now!
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