What Causes A Lisp, And Can It Develop Later In Life? Lisping can be caused by genetic factors, says Dr Kapoor, adding that some individuals inherit speech patterns that include lisping ...

It causes difficulty pronouncing some consonants, with “s” being one of the most common. Lisping is extremely common. One source estimates that 23 percent of people are affected at some point ...

There was no family history of the disease. My sister-in-law, age 72, is now experiencing occasional problems with lisping. Could this be the first sign of her developing familial ALS?