How can you tell if you have sensitve skin?

I don%26#039;t know if i have sensitive skin, i think i do, but is there anyway to tell besides going and seeing a doctor?|||if your skin has reactions to certain things. that how i found out. im allergic to fabric softeners and cant wear nickel jewelry. i also cant use some hand soaps because theyre too harsh and cause irritation.|||well the way i know i have it , is if i put sunscrren or tannig lotion on my body i get a little rash from it , and if i wear coverup on my face if i dont wash it off in a couple hours my face gets all oily and i will get little pimples around my neckk