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Tic-like grimacing , shoulder-shrugging , sniffing , grunting , and coughing are common symptoms of the disorder ; less frequent but perhaps more alarming symptoms include uncontrollable vocalizations , head-banging , and other involuntary self-destructive actions . While none of the risks received a score of one , Table 13 summarizes the risks that received a scoring of two or three : carbon tetrachloride background levels , working with vinyl chloride before OSHA , involuntary exposure to household chemicals or pesticides , and carbon tetrachloride accidents at other sites . The current programs are designed to protect individuals and families against a loss of income due to involuntary unemployment ( Unemployment Insurance ) , work-related accidents ( Workmen 's Compensation ) and retirement ( Canada and Quebec Pension Plans6 ) . With respect to the environment , guidelines were prepared for operational activities relating to the following areas : forestry ; coastal land and marine activities ; chemical hazards and toxic wastes ; involuntary resettlement , industrial sector and mining . Symptoms of withdrawal can include restlessness , muscle and bone pain , insomnia , diarrhea , vomiting , cold flashes with goose bumps ( " cold turkey " ) , and involuntary leg movements .