Why is Betamethasone not working on my itching feet?

Question

Hello doctor,

Both of my feet have been itching badly and are covered in tiny bumps. When I scratch them, it feels like they ooze liquid, but I never see any discoloration. They look like scabby rashes and are now starting to swell in some areas. They burn and hurt when I walk. I have tried many different sprays and creams to stop the burning and itching, but nothing has helped. My doctor prescribed Betamethasone Dipropionate Cream USP, 0.05 %, but it has not made any difference. After they somewhat heal, my skin looks almost reptile-like. This has been going on and off for about three months now, but it is getting much worse, and the pain is becoming unbearable. I have never had this kind of problem with my skin before. I only take Adderall 20 mg twice daily. I have been on Adderall for over 10 years and never had any problems. Even now, I have been on Adderall for a little over a year, and I know it is not causing this issue. The problem is mainly in both my feet, more so in my right foot, but the left foot is affected too. The pain and symptoms are starting to extend halfway up my calf and shin area.

Kindly help.

Answer 1

Hello,

Welcome to icliniq.com.

I am sorry to hear about the severity and persistence of these symptoms. Let us review the key points:

Itching, tiny bumps, burning, swelling, and pain seem like an inflammatory skin process.
Chronic (persists for more than three months), worsened despite Betamethasone 0.05 %
Thick, scaling skin afterward, reptile-like appearance.
No known triggers.
No obvious infection signs.

Given the failure to respond to a potent topical steroid and the presence of weeping (oozing) lesions, several possibilities come to mind:

Possible causes include -

Dyshidrotic eczema (pompholyx) – Small fluid-filled blisters on hands and feet, very itchy, can become cracked and weepy.
Chronic allergic contact dermatitis, perhaps from shoes, socks, or repeated exposure to a substance.
Fungal infection (tinea pedis) with secondary eczema – Fungal infections can cause chronic scaling and inflammation.
Scabies - It often shows up between the fingers or on the body, but it can cause intense itching and a rash in other places as well.
Autoimmune or severe eczema (for example, nummular eczema and psoriasis variants).

I suggest you do the following -

See a dermatologist as soon as possible since this is worsening and not responding to treatment; you need a skin expert’s evaluation.
Consider testing for fungal infection – A KOH prep (potassium hydroxide preparation) or fungal culture of the skin scrapings to check for tinea (athlete’s foot). Topical steroids can worsen fungal infections if present.
Consider patch testing to see if you are reacting to a contact allergen (shoes or work environment).
If it is severely infected (oozing a lot, warm, red, fever), you may need an oral antibiotic.

Meanwhile, supportive care includes the following -

Keep feet clean and dry.
Avoid scratching – Consider ice packs, antihistamines (for example, Cetirizine)
Use gentle, unscented moisturizers.
Avoid occlusive footwear until evaluated.
If infection is suspected (yellow crusts and fever), seek urgent care.

Let us discuss why the Betamethasone is not helping.

If it is a fungal infection, steroids make it worse.
If it is an allergic or irritant reaction, the trigger may still be present.
If it is scabies, steroids do not kill mites
If it is dyshidrotic eczema, stronger anti-inflammatory or oral treatments may be needed.

I suggest you do the following further -

Book an urgent dermatology appointment.
Bring photos of rash progression if it is not currently flaring.
Ask about fungal scraping, bacterial swab (if infection), and possible systemic treatment.

I hope this helps.

Thank you and take care.

Regards.