E. coli mastitis in cows: symptoms and what to know

Possible udder changes include swelling, heat, redness, tenderness, or a quarter that feels different. Milk may look watery, clotted, discoloured, or contain flakes. A cow with more severe illness may be dull, stop eating, become dehydrated, have a fever, or develop weakness and collapse.

This page concerns cattle, not a diagnosis for a person. Human breast inflammation during breastfeeding can also cause breast pain, warmth, redness, a firm area, and fever, but those symptoms need human medical advice. Painful Breastfeeding may have mechanical contributors, and Breast Pain has many causes.

Separate the affected cow as advised by the farm veterinarian, provide access to clean water, and seek veterinary assessment without delay. Do not give leftover human medicines or choose an antibiotic without veterinary direction. The veterinarian may examine the udder, assess hydration and general condition, and test milk when appropriate.

Follow instructions about milking, medicines, hygiene, and when milk can return to the food supply. A Lactation Consultation is relevant to human breastfeeding support, not veterinary treatment of cattle.

Treat collapse, marked weakness, severe dehydration, inability to stand, or rapidly worsening illness as an emergency for the animal. Contact a veterinarian immediately. If a person has breast redness with fever, severe pain, or feels very unwell, seek human medical care instead.

For the veterinarian: which udder quarter is affected, does the cow need isolation, and what testing and treatment plan is appropriate? For a breastfeeding person: could this be mastitis, and when should I be examined?