title: Letter: False-negative reaction to patch testing with volatile compounds.
mesh_terms: D003877:Dermatitis, Contact / Q000139:chemically induced* / Q000175:diagnosis; D005188:False Negative Reactions; D012882:Skin Tests; D012997:Solvents / Q000009:adverse effects; D013750:Tetrachloroethylene / Q000009:adverse effects; D014835:Volatilization
chemical_list: D012997:Solvents; D013750:Tetrachloroethylene