Hello, I ve got a question about a skin rash . My husband has diabetes and has been taking metformin for 3 years. In the last two days he d developed a skin rash that itches very much. It usually starts in the evening for him. He has not taken his metformin today. He also has a stomach cramps, diarrhoea and is unable to eat. He had earlier developed the same type of allergy to chloroquinone. Thank you for your reply in advance.
Hello,1. Please ensure there is no gastroenteritis (bacterial) with a stool routine/ culture studies. If there is fever, he will need a complete blood count, CRP, liver function tests. 2. Metformin itself can cause cramps, diarrhea.3. A stat capillary glucose check is important.4. Itchy skin rash can be taken care with antihistamines such as cetirizine 10\u00a0mg or Exocet 5\u00a0mg. People with diabetes can get a fungal skin rash that is variably itchy and not much red, for which antifungal creams are required. See your doctor if the antihistamine tablets do not help. Best Wishes.