MASTITIS CAUSED BY EXTERNAL FORCE 9 



flamniation clears the tissue of extravasated blood and 

 necrotic particles and fills the defects made in the tissue 

 by necrosis and its resorption, with connective tissue. 



Similar phenomena occur in the skin as dermatitis 

 when it becomes involved. 



Termination. — After resorption of the exudate in the 

 inflamed area, more or less sclerosis remains followed by 

 atrophy of the tubules. If the skin has also been involved 

 in the inflammation, it is no longer movable but is firmly 

 adhered to the udder. 



If there is a wound in the skin it may easily become 

 infected. This infection can possibly reach the injured area 

 in the udder tlu'ough the lymph-vessels and in that way 

 give rise to an infectious mastitis. 



Clinical Symptoms. — We see immediately or soon 

 after the impact of the force, as a rule, the formation of a 

 moderate circumscribed swelling which is the primary 

 lesion. In the course of one day the swelling increases, be- 

 comes hot (hyper^emia), painful and somewhat firm fol- 

 lowing blood coagulation and cellular infiltration. 



After several days the swelling begins to recede and 

 gradually diminishes, after which, however, a somewhat 

 firmer, more circumscribed nodular formed area remains, 

 due to connective-tissue induration. 



Treatment. — The condition is not serious. Usually no 

 treatment is necessary. The process heals out rapidly. 



In the first few days one can reduce the hypersemia and 

 hemorrhage by the use of cold-water treatment (vaso- 

 constriction) . One can apply a cold water compress to the 

 udder by a suspensory bandage placed around the middle. 

 If the skin is injured one can prevent infection of it by 

 the use of a Burrow's solution compress. 



When the swelling begins to recede one can assist the 

 treatment by the use of a skin irritant, as concentrated 

 iodine solution rubbed in as a stimulation to resorption. 



