A habit cough (also known inappropriately as psychogenic cough, tic cough, and somatic cough disorder) is a cough that may develop in children or adolescents after a cold or other airway irritant. Similar symptoms have been less frequently reported in adults but may not be the same disorder as is seen in children or adolescents. First described in 1966 in a small series treated by "the art of suggestion," further publications identified patients with the same symptoms treated effectively with suggestion therapy. The average age has been reported as 10 years at clinics in Iowa, Minnesota, and London England. Eighty-five percent of 120 children diagnosed with habit cough over 20 years in Iowa were between ages 8 and 14 with a range from 5 to 18. Based on experience in Iowa and London, major referral centers for children may be expected to encounter at least 7-9 per year.
Habit cough is characterized by a harsh barking cough, and becomes persistent for weeks to months. The cough's hallmarks are severe frequency, often a cough every 2–3 seconds, and the lack of other symptoms such as fever. The child can have trouble falling asleep but once asleep will not cough. Absence once asleep is considered essential.
While there are many causes of chronic cough, it is generally not essential for an extensive evaluation of multiple causes of cough to be made since the clinical pattern is usually sufficiently apparent that the diagnosis can be made by the clinical presentation, i.e., a repetitive harsh barking cough that is absent once asleep. Those familiar with this disorder readily recognize it without much in the way of testing.
Successful treatments have involved a few reports utilizing hypnosis, but suggestion therapy has been most extensively used.
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