Related Clues:

• Calm a sick person
• One in hospital
• One's dropped into open case
• Invalid puff about obligation
• One receiving treatment
• Invalid without one, it's obvious
• Willing to wait
• Sufferer prepared to wait
• You must be this in the doctor's waiting room!
• I got involved in obvious case
• Long to insert ligature, one of interest to medics?
• One's placed in sort of leather case
• Investigator primarily looking into copyright case
• Job was open — one had to go in for it
• One being treated