This may be the vocal tic disorder. Since your husband is deaf, he does not hear it and so difficult to control.
Complex vocal tics (coprolalia, palilalia, echolalia), which can be among the most impairing types of tics, are seen in adult-onset primary tics as well. In adult-onset idiopathic tics, motor and phonic tics are the most common types of tics, followed by motor tics and, lastly, phonic-only tics.
Tics are usually treated with one or more of the following approaches:
3) behavior therapy,
4) botulinum toxin, and,
5) deep brain stimulation surgery.
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