This is an adverse reaction to milk protein in hypersensitive individuals. If no imunological mechanism is recognized, it will be called intolerance.
Milk intake should be stopped immediately and objective examination, state of consciousness, hydration status and body weight should be noted. Replace cow’s milk with women’s milk, soy protein formulas, meat-based baby food. In case of a severe reaction, observation of vital signs for at least 12 hours is required. If it is necessary to subject the child to electrolycemia, azotemia, HT, blood glucose and blood gas analysis.
Source: Mediserve‘s Medical Emergencies in Pediatrics.