There are five stages of skeeter syndrome based on the cumulative number of bites a person experiences in their lifetime.
At stage 1, the first mosquito bite results in a small spot on the skin. At stage 2, subsequent bites only cause a delayed reaction.
At stage 3, more bites lead to both immediate and delayed reactions. At stage 4, additional bites only trigger an immediate reaction.
A person reaches stage 5 with prolonged exposure. Some individuals may not experience immediate or delayed reactions. Stage 5 may indicate potential desensitization to mosquito saliva.
Even so, some research shows significant individual differences in the progression of stages, with some people staying at a particular stage for decades at a time.