Hot tingling breasts and goose bumps during breastfeeding may be caused by milk stagnation, blocked milk ducts and acute mastitis. 1. Milk stagnation: Because new mothers have no experience in breastfeeding and babies can’t suck the milk clean, the milk stagnates in the glandular lobules, allowing bacteria to grow and multiply. Because new mothers have no experience in feeding babies, it is easy for milk to stagnate and not be emptied on time. 2. Mammary duct obstruction: regular frequent breastfeeding and localized pressure on the breast is the main cause of mammary duct obstruction, commonly secondary to milk stagnation, resulting in breast heat and tingling all over the body goosebumps. 3. Acute mastitis: the most common in breastfeeding pregnant women, due to the baby sucking posture, breast duct obstruction, milk stagnation, resulting in acute mastitis, the patient will be breastfeeding breast fever tingling goose bumps. When breastfeeding breast fever tingling goosebumps all over the body, most of the consideration of acute mastitis possible, should promptly consult a doctor, under the guidance of the doctor for treatment.