Parasitic Infections: 10 Symptoms You Can't Ignore

3. Anal Itching

A frequent sign of some types of parasitic infection is itching around the anus. Anal itching can be a troublesome symptom and usually persists until the treatment takes effect. This symptom can cause embarrassment, interrupt sleep, and lead to anxiety. The itching tends to be at its worst during the night, which is when most parasites lay their eggs and are most active. The itching itself may damage the skin, increasing the likelihood of further infection.