Really appreciate your concern, the history given hare is suggestive of some infection, if there are lymph
node (Swollen) in the neck region with the history of throat pain while swallowing then this could be a bacterial infection, another the red scab could be a different pathology than the infection, in my opinion such case should be treated with the antibiotic, and the best option is "Tab Ciprofloxacin
500 mg twice in day for five days, Tab Acetaminophen
with Domeperidone three times in day, once the infection comes under the control there won be sensation of nausea
, if this regime fails to respond then clinical examination and blood work would be necessary, take care and have nice day.