Hypoglycemia
Hypoglycemic symptoms and manifestations can be divided into those produced by the counterregulatory hormones (epinephrine/adrenaline and glucagon) triggered by the falling glucose, and the neuroglycopenic effects produced by the reduced brain sugar.Not all of the above manifestations occur in every case of hypoglycemia. There is no consistent order to the appearance of the symptoms, if symptoms even occur. Specific manifestations may also vary by age, by severity of the hypoglycemia and the speed of the decline. In young children, vomiting can sometimes accompany morning hypoglycemia with ketosis. In older children and adults, moderately severe hypoglycemia can resemble mania, mental illness, drug intoxication, or drunkenness. In the elderly, hypoglycemia can produce focal stroke-like effects or a hard-to-define malaise. The symptoms of a single person may be similar from episode to episode, but are not necessarily so and may be influenced by the speed at which glucose levels are dropping, as well as previous incidents.
Yorkshire Terrier
Certain genetic disorders can be found in Yorkshire Terriers, including distichiasis, hydrocephalus, hypoplasia of dens, Legg–Calvé–Perthes syndrome, luxating patella, portosystemic shunt, retinal dysplasia, tracheal collapse and bladder stones. The following are among the most common congenital defects that affect Yorkie's.Low blood sugar in puppies, or transient juvenile hypoglycaemia, is caused by fasting (too much time between meals). In rare cases hypoglycaemia may continue to be a problem in mature, usually very small, Yorkies. It is often seen in Yorkie puppies at 5 to 16 weeks of age. Very tiny Yorkie puppies are especially predisposed to hypoglycaemia because a lack of muscle mass makes it difficult to store glucose and regulate blood sugar. Factors such as stress, fatigue, a cold environment, poor nutrition, and a change in diet or feeding schedule may bring on hypoglycaemia. Low blood sugar can also be the result of a bacterial infection, parasite or portosystemic liver shunt. Hypoglycaemia causes the puppy to become drowsy, listless (glassy-eyed), shaky, uncoordinated, since the brain relies on sugar to function. During a hypoglycaemic attack, the puppy usually has very pale or grey gums. The puppy also may not eat unless force-fed. Hypoglycaemia and dehydration seem to go hand-in-hand, and force-feeding or injecting fluids may also be necessary. Additionally, a hypoglycaemic Yorkie may have a lower than normal body temperature and, in extreme cases, may have a seizure or go into a coma. A dog showing symptoms should be given sugar in the form of corn syrup or Nutri-Cal and be treated by a veterinarian immediately, as prolonged or recurring attacks of hypoglycaemia can permanently damage the dog's brain. In severe cases it can be fatal.