Partialism can be described as the concentration of sexual interests on one particular part of the body. Partialism is related to fetishism, but it is not the same.
More About Partialism
Partialism involves the extreme sexual interest in one particular part or area of the body which is used to attain sexual gratification. It is included under the broader umbrella of sexual fetishism, but is limited to the body. A fetish can include anything such as inanimate objects or living things. The term describes the fascination or sexual arousal surrounding one part of a larger whole.