<unk> , also known as Macklin's syndrome, is a syndrome of spontaneous subcutaneous emphysema (air in the subcutaneous tissues of the skin) and pneumomediastinum (air in the mediastinum, the center of the chest cavity), sometimes associated with pain and, less commonly, dyspnea (difficulty breathing), dysphonia, and a low-grade fever.<unk>  can cause<unk> 's sign, an unusual combination of sounds that can be heard with a stethoscope.
Hamman's syndrome
Wartenberg's syndrome
Susac's syndrome
Liddle's syndrome
Banti's syndrome
Renpenning's syndrome
Wilkinson's syndrome
Satchmo's syndrome