Type 2 diabetic got stung by wasp about 2.5 days ago, initial reaction was local pain. Cooled with ice water, took naproxen and used hydrocortisone cream. No  proble until 1.5 days later, finger began to swell and itch...more cream and benadryl. Finger continues to be erythemous and swollen. Blood sugars running about 50 points higher than norm.
Hello, Welcome to Chat Doctor, As you were stung by a wasp which can be uncomfortable, but most people recover quickly and without complications. Mild and moderate reactions to wasp stings can be treated at home. You need to wash the sting area with water and soap to remove as much of the venom as possible. Cold pack may be applied over the stung area to reduce swelling and pain. If there is itching you can apply calamine lotion to control the discomfort. Itching and pain can be reduced by Antihistamines like Chlorpheniramine Male ate and Ibuprofen respectively. Thank you.