Which of the following is a sign of serious inhalant abuse?

The presence of large amounts of residue on hands and face is a significant indicator of serious inhalant abuse. Inhalants are often volatile substances, and the use commonly leaves visible marks or residues on the skin of individuals who engage in this behavior. Such residues can be from the chemicals present in inhalants that users may come in contact with directly, indicating frequent use.

Inhalant abuse often manifests with various physical signs, and visible residue serves as a direct physical reminder of the substances being abused. Detecting residue can be critical for identifying someone struggling with inhalant addiction, thus highlighting the severity of their situation. Signs such as bright, clear skin, consistent smiling, or normal breathing patterns typically do not align with the physical effects and behavioral characteristics associated with serious substance abuse. Instead, these symptoms are more common in individuals who are not abusing inhalants or other substances.