signs and symptoms of huffing
â Restlessness or nervousness. â¢ Short-term symptoms. The signs of inhalant-influenced behavior are similar in many ways to the symptoms of alcohol abuse, so it may be difficult to determine the root cause based on behavior alone.â Dizziness. â Hallucinations. â Nausea or vomiting. â Impaired judgment. Long term effects of Huffing are life changing. Restlessness or nervousness. â¢ Short-term symptoms. The signs of inhalant-influenced behavior are similar in many ways to the symptoms of alcohol abuse, so it may be difficult to determine the root cause based on behavior alone.