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.
One of the main causes of sneezing is infection. In some cases, the vet may take a swab from the mouth, throat, eyes, or nose and send it to a lab to confirm an infection. Inhaled irritants or allergens are other common causes of sneezing in cats. Viral, bacterial, or fungal infections.