Dyspnea in Patients with Stiff-Person Syndrome.

Background: Stiff-person syndrome (SPS) is a rare autoimmune disorder that leads to progressively worsening stiffness and spasm of thoracic and proximal-limb musculature. Dyspnea has been reported but not analyzed in patients with SPS.

Materials And Methods: For this prospective study, 17 patients were recruited from a university-based neurology clinic.

Vitamin D deficiency is associated with pulmonary dysfunction in cystic fibrosis.

Background: Vitamin D deficiency is common in CF. Whether vitamin D affects pulmonary function in CF is unknown.

Methods: Data were abstracted from clinically stable CF patients who had pulmonary function studies and serum 25-hydroxyvitamin D [25(OH)D, ng/ml] levels drawn within 2 months of each other.