Is it permissible to undergo a cosmetic nose surgery – subtly, without significantly altering its original creation – to alleviate severe psychological and health suffering caused by its shape?

It is not possible to give a definitive answer to your question, because the ruling depends on the actual shape of the nose and whether it has deviated from the usual limit and become disfigured. A distinction must be made between cosmetic surgeries performed to increase beauty, which are impermissible, and those intended to remove harm, a defect, or disfigurement, such as a deviated nose or an excessively protruding bone. These are permissible to treat surgically.