Medical Engineering encompasses a broad range of activities, and is alternatively called Bioengineering and Biomedical Engineering.
Just like humans, cats can develop allergies to things in the environment. Cat allergies can be caused by many different things, and the cause usually has to be figured out by a process of elimination. Sneezing that's caused by an allergy is often accompanied by scratching and other skin problems. These include frequent rubbing of the face and excessive grooming which may cause hair loss.
If your cat is sneezing occasionally, it may be due to an allergic reaction; however, if the symptoms of the cold continue for a few days, it could be due to a serious infection in the upper respiratory tract. Such infections can cause a loss of appetite. Stomach and intestinal problems like a twisted bowel, certain medication, cat leukemia, and diabetes are some of the other causes of a cat appetite loss. Like humans, cats may also suffer from a lot of problems. Cats too need energy when they are sick.