Is it permissible for a doctor to lie to a patient out of fear of their reaction upon learning the truth about their illness?

Lying is reprehensible and impermissible except out of a necessity that cannot be averted by any other means, due to its leading to transgression. Lying can be avoided by resorting to dissimulation (tawriya) and ambiguous expressions (ma'arid). If lying becomes necessary to avert harm or to achieve a religiously sanctioned benefit, or to ward off corruption, then lying is permissible and may even be obligatory if it is for the attainment of something obligatory. The rule is that for every praiseworthy objective that can be attained through both truthfulness and lying, lying is forbidden. If it can only be attained through lying, then it is permissible if the attainment of that objective is permissible, and obligatory if its attainment is obligatory. Accordingly, if a doctor knows that lying to the patient is the only way to save his life or to prevent his health from deteriorating, then lying becomes obligatory for him.