As evident by the wording being "immediate, subacute, and delayed", types of hypersensitivities differ based on how quickly the side-effects manifest in someone exposed to them.
- Immediate hypersensitivity has an almost immediate side-effect when exposed to someone.
- Subacute hypersensitivity is something that manifests some time after its exposure. This type of hypersensitivity is commonly found with slow exposure, and can be treated even months after its first exposure.
- Delayed hypersensitivity is something that manifests itself years after exposure, and not all at once.
Peanut allergies (both when tested on people to see what effects it will have in a lab and when broken down chemically and mathematically) is something whose side effects manifest almost immediately whether it be minor itching or even mass swelling. Even without major testing, one could deduce with almost certainty that in almost all cases, there is an immediate hypersensitivity to peanut allergies when provoked.