American dagger moth may potentially cause allergies in humans during its larval stage through contact with its hair. These allergies are usually mild and affect a small group of individuals, with symptoms such as itchiness or rash. Given the low risk, most people will not have severe reactions, but sensitive individuals should handle american dagger moth cautiously to avoid allergic responses.

American dagger moth can cause discomfort to humans primarily through physical contact with its hair during its larval stage. People might experience skin irritations, such as itching or rash, especially if they have sensitive skin or predisposed allergic reactions. The likelihood of encountering american dagger moth usually increases in environments where they are prevalent.

To minimize the risk of discomfort from american dagger moth, people can wear protective clothing, such as long sleeves and gloves, when in areas where american dagger moth is known to inhabit. Maintaining a clean environment by removing potential american dagger moth habitats near living spaces can also deter their presence. Use of environmental barriers or natural deterrents is a practical strategy.

If someone experiences discomfort from american dagger moth, washing the affected area with soap and water can help alleviate symptoms. Application of a cold compress may ease itching or swelling. It's important for individuals to not scratch the affected area to prevent infection. During recovery, keeping the area clean and monitoring for signs of increased irritation or infection is advisable. Furthermore, maintaining a well-sealed living environment can help prevent future encounters with american dagger moth.

American dagger moth inflicts harm on plants like Oak, Maple, Elm, and Willow by chewing on their leaves. The feeding activity results in the removal of plant tissues which can lead to defoliation and potentially weaken the plants, compromising their growth and overall health.