Hass avocado fruit
We have a hass tree about 5mtrs tall is loaded with fruit, the last 2 seasons at least 50%of the fruit is damaged. Sometimes it has raised lumps on the skin, but when u cut and peel the fruit there are all these hard lumps in the flesh about the size of a (China Pin Head) sometimes so many the fruit is inedible. No one can seem to tell me what is causing it and how to treat it, there currently is approximately 30 more avos on the tree not all are damaged, near by we have a Shawell avos tree, elendale mandy late velencia and a Washington navel trees , no problem at all with fruit fly or disease, just the Hass, it is about 13 years old Hope you can help please Regards Fay
I found this information on an issue called Sclerocapelosis in Avocado.
This sounds like your issue.