The answer to 'tile neglected' is that neglected tiles can develop a variety of issues, including discoloration, cracking, and even mold growth. This is often caused by a lack of regular cleaning and maintenance, as well as exposure to moisture and other environmental factors.
The symptoms of neglected tiles can include dull, discolored surfaces, loose or cracked tiles, and the presence of mold or mildew. In severe cases, the underlying subfloor may also become damaged. The best solution depends on the extent of the damage, but typically involves a thorough cleaning, regrouting, and potentially even tile replacement in some areas.