110 RURAL VETERINARY SECRETS 



week. The hair should be thoroughly soaked to the skin so as to 

 come in direct contact with the offending parasites. This will af- 

 ford immediate relief, if due to the first cause. If from the second 

 cause, the animal should be given a saline purgative such as a pound 

 of Bovolax dissolved in a quart of warm water. Give one pint as a 

 drench morning and night. Then give one tablespoonful of Sangui- 

 tone in moist food three times daily. 



NETTLE RASH (Urticaria or Surfeit) 



This is a mild inflammatory affection of the skin affecting cat- 

 tle and horses most frequently, characterized by a sudden develop- 

 ment of patches of various sizes from that of a nickel to one as 

 large as the hand. The patches of raised skin are marked by an 

 abrupt border and are irregular in form. All the swelling may dis- 

 appear in a few days, or it may go away in one place and reappear 

 on another part of the body. It is always accompanied by a great 

 desire to rub the affected part. In the simplest type, as just de- 

 scribed, it is never followed by any serious exudations or eruptions, 

 unless the surface of the skin becomes abraded from scratching or 

 rubbing. 



CAUSES 



Derangement of the digestive organs are the most common 

 causes, such as overloading the stomach when the animal is turned 

 out to graze in the spring, certain constituents of food, and high 

 feeding among fattening stock. When the kidneys are functionally 

 deranged urticaria may appear. Spinal irritation and other nervous 

 aff'ections may Cause it. The disease consists of a paralysis of the 

 nerve ends that control the volume of the capillary vessels in cer- 

 tain areas of skin, thus permitting the vessels to expand and their 

 contents in part to exude, producing a soft, circumscribed swelling. 



TREATMENT 



Dissolve a pound package of Bovolax in a gallon of ivarm 

 water. Give a quart as a drench every three hours. Then follow 

 with a teaspoonful of Sanguitone in moist food three times daily 

 for a week or ten days. This dose is for adult horses or cattle; for 

 smaller animals, give smaller doses according to size and age. 



