Acute tonsillitis is a general acute infectious disease primarily affecting palatine tonsils. The inflammatory process may involve other areas of the lymphadenoid pharynx and larynx as well – the lingual, laryngeal and nasopharyngeal tonsils. The infection process can be exogenous (more often) or endogenic (autoinfection). As to infection transmission, it can be either airborne or alimentary. Endogenic infection involves the oral cavity or pharynx (chronic inflammation of the palatine tonsils, caries, etc.). This kind of infection may be prompted by suppurative diseases of the nose and sinus. The disease is usually promoted by staphylococci, streptococci (especially haemolytic) and pneumococci. There is certainly evidence that the disease may promote quinsy featuring viral aetiology. Among precipitating factors are local and general hypothermia and decreased organism reactivity. Quinsy usually affects children of both school and pre-school age, as well as adults up to 35-40 years of age, especially in autumn and spring. Patients usually run a high temperature, suffer from malaise and feel pain when swallowing. They also complain of pain in their joints, headaches, periodic fevers, etc.