How can I obtain a medical visa extension in Thailand due to illness?

@Jasmine *********

After 48 hours you will know if the antibiotics are working. It's been more that 48 hours now. Sounds like you need the clinic to repack your dressing for travel, and take some pain killers. If you have a worsening ulcer it will take 4-6 weeks to heal. You must travel now, all the moreso because you have CKD and are immunocompromised. CKD is associated with Calciphylaxis, which can cause serious complication. Whether its possible depends on the prognosis of your renal disease. Itis is a ulcerating and painful syndrome that will not respond to antibiotics. Has the doctor confirmed an infection due to raised WBC? Does he understand your health condition. I think you should urgently return to the UK and seek treatment. Call your GP in the UK, or even try 111, as you can speak to a doctor through that. Presumably your travel insurance will pay out on medical evacuation. If you had normal health, after 4 days on antibiotics, inflammation will be markedly reduced. If your room has a bath, spend your time soaking in hot water as this will improve your fitness to travel.

@Jasmine *********

you need a standard unable to fly/travel document from your doctor. Then the hospital/clinic to submit it to immigration. Immigration at Chaeng Watthana does have wheelchair service if you can get there, but you will still need the letter from the doctor.