General prefixes:
* Pre-: Indicates something that happens before the treatment. Examples: *pretreatment*, *pre-treatment evaluation*.
* Post-: Indicates something that happens after the treatment. Examples: *post-treatment recovery*, *post-treatment care*.
* Re-: Indicates a repeated treatment. Examples: *retreatment*, *re-treatment cycle*.
* Co-: Indicates a treatment done in conjunction with another. Examples: *co-treatment*, *co-treatment therapy*.
More specific prefixes:
* Anti-: Indicates a treatment that counteracts something. Examples: *anti-cancer treatment*, *anti-inflammatory treatment*.
* Chemo-: Indicates a treatment using chemicals. Examples: *chemotherapy*, *chemo-treatment*.
* Photo-: Indicates a treatment using light. Examples: *phototherapy*, *photo-treatment*.
* Radio-: Indicates a treatment using radiation. Examples: *radiotherapy*, *radio-treatment*.
Other options:
* Alternative: Indicates a non-traditional treatment. Example: *alternative treatment*.
* Complementary: Indicates a treatment used alongside conventional medicine. Example: *complementary treatment*.
To choose the best prefix, consider:
* The type of treatment: What is being treated and how?
* The timing of the treatment: Is it before, after, or during another treatment?
* The purpose of the prefix: Are you emphasizing a specific aspect of the treatment?
For example, if you are talking about a treatment that uses light to cure a skin condition, *photo-treatment* would be a suitable prefix. However, if you are talking about a treatment that is done before surgery, *pre-treatment* would be more appropriate.