Cold sore throat is caused by dryness and lack of water, and throat irritation due to inflammation.
1. When the virus infects the body during a cold, as an exogenous thermogenic source, it prompts the hypothalamus to rise in the thermoregulation point, and the body increases heat through skeletal muscle contraction and tremor, and capillary contraction to reduce heat dissipation, leading to an increase in body temperature, and dryness and dehydration of the mucous membranes of the throat due to evaporation and dispersal of water, which can lead to a sore throat.
2. After a cold, the virus invades the mucous membrane of the throat, resulting in a localized specific immune response, increased capillary permeability, a variety of inflammatory cell infiltration, increased platelet adhesion and other changes, causing sore throat.
In addition, cold sore throat may also be secondary to bacterial infection after tonsillitis, acute pharyngitis and other lesions.
If the cold symptoms continue not to get better or even aggravated, it is recommended to consult a doctor in time.