I am Dr Shamoon. Thank you for the photos and the very useful drug history. In an elderly diabetic, hypertensive gentleman post-CABG who has recently been started on rifaximin plus other antibiotics for an intestinal infection, a new rash on the leg most likely is a drug-related eruption - a maculopapular drug rash. The timing is what points to it: if the rash appeared within days to about two weeks of starting the new antibiotics, drug hypersensitivity is far more likely than an insect bite. An insect bite is usually one or a few discrete raised itchy bumps with a central punctum, often around the ankles, whereas a drug rash is more widespread, symmetrical, reddish and blotchy, and may spread upward from the legs. Rifaximin acts mostly in the gut and rarely causes rashes, so the other antibiotic he received is the more likely culprit; some BP medicines (particularly amlodipine, which can also cause leg swelling and stasis changes) and, in diabetics, fungal or bacterial skin infection or diabetic dermopathy are the other realistic possibilities. His diabetes also matters because skin heals slowly, itching leads to scratching, and secondary infection or cellulitis can develop quickly in an elderly leg. I would not advise steroid creams or antibiotics blindly here - with his cardiac history and multiple drugs, the diagnosis must be confirmed by examination, and no medicine of his should be stopped without the treating doctor's advice.

Cellulitis?? Augmentine duo625 three times a day after food for 7to ten days.  Zerodol sp three times a day after food for five days. Montek lc one at night for 7to ten days. YET YOU CAN CONSULT SUPERSPECIALIST LIKE GENERAL SURGEON

Visit to Dermatologist

Could be eczema. Please consult a dermatologist physically.

Yes get it examined in person.

kindly do connect and consult with me for better treatment plan and advice on your case via PRACTO app

Yes,examination needed by dermatologist.

If it is an itchy rash it could be allergy with probable cellulitis Since he’s diabetic better to see a dermatologist for proper examination and assessment of the skin problem .is it in 1 leg or both ,is it painful?

If you would like to discuss your concern in more detail, please feel free to contact me on WhatsApp at eight six one nine six six nine nine zero six. Alternatively, you can connect with me through the Practo app for a detailed consultation

Need a few more details please consult for further evaluation and treatment

Need few more details for further evaluation. Please consult

Avoid fried and spicy food Water intake more Green leafy vegetables more Fiber meal Do connect and consult Will help you

Can help you , kindly consult and provide detailed history for proper diagnosis and further management