Tactile hallucinations are noticed in
Magnan's Syndrome / Cocaine Bugs This is seen in cocaine addicts. It is a type of tactile hallucination. There is a feeling as if grains of sand are lying under the skin or small insects are creeping on the skin giving rise to itching sensation (formication).
Parkinsonism
Chronic depression
Chronic cocaine poisoning
Acute barbiturate poisoning
Toxicology - 2