Thank you very much for contacting healthcare magic. According to your complain you have problem of anal itching that is most because of pinworm infection around anal region. Pinworm infection is common at anal region. Anal fissure like condition cause anal itching problem with pain. External hemorroid is also cause anal itching problem. Skin infection like psoriasis may cause anal iritation problem. Chronic diarrhea may cause anal itching problem. Some spicy foods cause this type of problems. Anal region traumatised by excessive scratching also. That may cause anal itching problem. Anorectal examination is helpful for further diagnosis. Take care. Thank you very much.