8. In the 20th century, special was used freely as a modifier describing services or accessibility resources for people with disabilities or disabled people's functional needs, and sometimes as a euphemism for disabled to label the people themselves. Most euphemistic language for disabilities and people with disabilities is no longer preferred, and special used in this way may be considered offensive, especially when used to describe a person.
The phrase special needs is somewhat more accepted, but is less common than it used to be. Instead, when possible, make reference to the specific disability in question. However, the fixed expression special education is still an official designation in public education and continues to be used, even by speakers who otherwise avoid special and its compounds.

Did you mean superficial?