Blocked milk ducts are often indicated by hardness in areas of the breast and pain when pressure is applied to the affected area. If germs build up in the blocked milk, the body’s temperature can often increase over 39°C. Flu-like symptoms such as headaches, aching limbs, chills, shivering and general weariness are typical. The painful areas of the breast turn red, putting pressure on these areas is very painful and the skin is tight. Warm wrap treatments using the liquid for external use "Retterspitz Äußerlich" prevent it worsening or developing into mastitis. We recommend treating blocked milk ducts after breastfeeding and then cleaning the treated area.