Disinhibited Trump

sir – Dexamethasone and other potent steroids are known to induce pronounced mood swings and irrational, disinhibited behaviour.

Should we be concerned that President Donald Trump, now taking this powerful drug (report, October 6) and demonstrating its side effects, remains in office? Precedent exists for temporary delegation of power to the vice president in these circumstances. Dr John Urquhart

Bury St Edmunds, Suffolk