Possible Clues:

• Painful thing's increase in prices constraining married mum
• Fire — I'm a Milton fan (anag)
• Painful swelling and redness
• A couple of million swallowed by rising prices may be a cause of pain
• A hot, painful reaction to a couple of Frenchman consumed by rising costs
• Allergic reaction a short distance into economic problem
• Job for man selling balloons involving Frenchmen first is swell - that's hot!
• Burning a couple of thousand, absorbed by general increase in prices
• A couple of million being sunk in financial problem? That could bring pain