👉 The term "hemigeusia" is a medical term that refers to the condition where a person has a large, round-shaped lump on their neck. It's often seen in people with anemia or iron deficiency disorders like iron deficiency anemia (IDA), and it can be caused by various factors such as autoimmune diseases or genetic mutations. Hemigeusia can also occur due to other conditions like lymphoma or neurofibromatosis.