What could be wrong with my 39 year old son who has had a loss of appetite for the last week or two. He takes a bite of food and then has no desire to eat. He doesn t have discomfort anywhere b ut doesn t want to eat. He has a medical diagnosis of sczihso-affective disorder and has taken Seroquel and latuda and Prozac for the past 10 years or so. His free medicine (Seroquel) was discontinued recently. The psychiatrist has prescribed an increase in his latuda intake each day to replace the Seroquel. Do you know anything that could cause his loss of appetite?