Hello and welcome to HCM.
The causes for hepatosplenomegaly
are the following:
, infectious mononucleosis
-Blood disorders (anemia, thalessaemia, etc.)
and many more.
Please note that hepatosplenomegaly is just a symptom, and there should be some underlying condition. Please visit your doctor for a more elaborate examination including a complete blood workup.
And yes, this condition is reversible, once the cause is treated this gradually subsides. In the meantime, you should avoid all fatty, oily food, and also meat.
I hope this information helps. Best wishes.