I totally understand your concerns about the rash. the following points should be taken into consideration : 1- Symptoms of drug allergies may start quickly, within the first day or two after taking the drug. The reaction also can be delayed and not occur until 8 to 10 days after starting the drug. Due to the following symptoms of itching and rash, it seems to be an allergy from taking Klavox. 2- A less common type of allergic reaction is called serum sickness. This can occur days or even a week after starting a medication.The symptoms of serum sickness include skin rashes, hives, fever and joint pain. This is unlikely in your case due to the absence of fever or joint pain. 3- You should stop Klavox. An antihistamine is recommended to decrease itching and the rash in your case. Antihistamine such as loratidine. 4- Regarding your sore throat, and due to the fact that you used a strong antibiotic (klavox) to treat the ear infection, it is unlikely to be a bacterial infection, unless the bacteria is resistant to klavox (which is unlikely but possible). The most possible reason is a viral infection, and to be noted that it is well known that a vital infection (EBV or CMV) after taking klavix will cause rash. 5- recommendations : stop klavox, take antihistamine, monitor your temperature, keep yourself hydrated, you must get better within few days. Best regards