I've applied dettol to my anus to treat itching but now I feel a little heavy at my anus (imflammation?) and also it feels a little sticky. Please help

Not a good use. Whenever you clean after a bowel movement use a dab of skin lotion on some bathroom paper to clean the area around + inside anus. Whenever it feels wet or sticky or irritated or itchy clean with skin lotion on bathroom paper. If itch persists, see a dermatologist.