What Causes Frequent Poking Sensation In Anus?

Hello, I have had this poking sensation in my butt ever since i can remember (which is probably right from the time i was 6 yrs old) and this is usually something the recurred every few months. It s not pain, but more of an annoying poke. To give myself some relief, I would usually stick my index finger in my anus and contract muscles in the region simultaneously. This would provide brief relief but for just a minute or so. I ve never given this issue much thought since it would also go away on its own. But more recently in the last 2-3 weeks, I ve had conversation with people who suggest that it may be a case of worms or something else. Additionally, these episodes of pokes seem to have come round more frequently in the last 3 weeks as well. Please advise on what can/should be done to treat this problem. Thank you