DAMS latest biochemistry PG -NOTES PDF download
Most pharyngitis is of viral origin. The major benefit of treating Streptococcus pyogenes pharyngitis is to prevent rheumatic fever, therefore antibiotic treatment is recommended for those at increased risk of rheumatic fever, i.e. if the patient has a history of past rheumatic fever, is of Maori or Pacific ethnicity, or is living in a lower socioeconomic area of the North Island, and is aged 3 – 45 years. Patients who fulfil one or more of these criteria, and who have features of group A streptococcus infection: temperature >38°C, tender cervical nodes, tonsillar swelling or exudate, and no cough, especially if aged 3–14 years, should have a throat swab taken and empiric antibiotic treatment either started immediately or if Streptococcus pyogenes is isolated from the swab.Avoid amoxicillin if infectious mononucleosis (EBV) is suspected due to an increased risk of rash.