Caterpillar Crawling on our Door

Last year of June, I saw this caterpillar crawling on our door. I hate caterpillars, they are itchy and it hurts if you touch it. I had accidentally touched a caterpillar when I was gardening and it really hurt my hand. It was very very itchy that my hand turned reddish. Its needle-like hair was very hard to remove from my hands. I didn't put any medicine or ointment on it. The itchiness just went away after a couple of minutes. So the next time I go gardening, I made a point to wear gloves to avoid hurting my hands. =)