Can mouth sores at 27 be a sign of Crohn's disease?

Question

Hi doctor,

I am 27 years old and was diagnosed with Crohn's disease affecting my terminal ileum two years ago and have been on Azathioprine 150 mg (milligrams) daily with reasonable but incomplete disease control until recently, when I developed multiple painful oral ulcers covering the inside of my cheeks and gums alongside worsening abdominal cramping, and my most recent CRP rose to 48 milligrams per liter from my previous stable baseline of 8 milligrams per liter.

Can mouth sores at 27 be a completely overlooked sign of Crohn's disease activity rather than simply being attributed to azathioprine toxicity or vitamin B12 deficiency?
Could my rising CRP alongside new oral manifestations indicate that my current azathioprine dose is no longer adequately controlling my systemic Crohn's inflammation and that escalation to biologic therapy with adalimumab is now urgently warranted?
Should a colonoscopy and upper endoscopy be scheduled immediately to fully assess my current disease extent and mucosal healing status?

Please help.

Thank you.

Answer 1

Hello,

Welcome to icliniq.com.

I have read your query and understand your concern, and I will definitely help you with it.

I am sorry you are dealing with this because painful oral ulcers, together with worsening abdominal symptoms, can be very distressing, and in someone with known Crohn's disease (bowel disease caused by inflammation and swelling), they absolutely can represent active systemic disease rather than being dismissed as only medication toxicity or vitamin deficiency.

Mouth ulcers are a recognized extraintestinal manifestation of Crohn’s disease and sometimes appear during disease flares alongside rising inflammatory markers, such as your CRP (C-reactive protein), increasing from eight to 48 milligrams per deciliter.

That said, Azathioprine-related bone marrow suppression, infections, folate or vitamin B12 deficiency, and other causes still need to be carefully evaluated with blood work, including CBC (complete blood count), liver tests, vitamin levels, and possibly thiopurine metabolite testing.

The combination of worsening cramps, elevated CRP, and new oral lesions does raise concern that your current therapy may no longer be adequately controlling inflammation, and many gastroenterologists would consider reassessing treatment strategy, including whether escalation to biologic therapy such as Adalimumab is appropriate.

A colonoscopy is commonly recommended in this situation to evaluate disease activity and mucosal healing, and depending on symptoms, an upper endoscopy may also be useful because Crohn’s can involve the upper gastrointestinal tract and oral cavity

Hope I have addressed all of your queries and concerns.

Do follow up whenever needed.

Thank you.