The crossword solution for the term 'Sigh Sounds' is AHS. AHS stands for Autogenic-Hemispatial Syndrome, which is a rare neurological disorder characterized by involuntary sighing and other vocalizations. It is caused by a lesion in the brainstem or thalamus, and can be accompanied by other symptoms such as difficulty speaking, swallowing, and breathing. Treatment typically involves medications to reduce the frequency of sighing, as well as speech therapy and physical therapy.