• Diffuse oesophageal spasm (DOS) is a disease characterised by multi-focal high amplitude contractions of the oesophagus.
• The pain from DOS can respond to nitrates (due to relaxation of muscle), making it difficult to distinguish from Angina (yet this pain is rarely exertional). As with achalasia, the examination is often normal.
• 🍒What are the characteristic features of diffuse oesophageal spasm on manometry

Corkscrew appearance on barium swallow

• 🍒What is the management of diffuse oesphageal spasm?