Beyond Disease Names
Medicine has always relied on names, like diabetes, asthma, psoriasis, fatty liver disease, polycystic ovarian syndrome. A diagnosis helps doctors communicate, guides research, and informs treatment. Disease names are useful, but they are not the whole story.
Diagnoses remain essential for communication, research, and making appropriate treatment decisions. A person with pneumonia requires different care from someone with heart failure, even if both present with breathlessness. Labels are valuable because they describe recognizable patterns. The important distinction is remembering that the label is not the person.
We go to a hospital and see healthcare organised around organs: cardiologists for the heart, dermatologists for the skin, gastroenterologists for the gut, etc. This has encouraged us to think of the body as a collection of separate compartments.
It also makes people think that the diseases they suffer from are independent from each other. You can hear it in the way they describe their complaints — "I've had diabetes for 10 years but I just want to treat this headache for now". "I did take treatment for epilepsy for 5 years but now I'm just here for my irregular menses".
There is also a period of undefined symptoms and discomfort before a patient falls into an existing disease label. This is a period that vexes many patients where nobody can diagnose why they don't feel well but they just don't, and this condition doesn't have a name and can be difficult to prescribe for.
What's organ cross-talk?
In recent years, an interesting shift has been taking place. Researchers are increasingly recognizing that many conditions once thought to belong to a single organ are, in fact, disorders involving multiple systems and pathways of the body.
A recent example is the renaming of non-alcoholic fatty liver disease (NAFLD) to metabolic dysfunction-associated steatotic liver disease (MASLD), another one being polycystic ovarian syndrome (PCOS) to polyendocrine metabolic ovarian syndrome (PMOS). The change reflects a growing understanding that fatty liver is rarely just a liver problem. It is closely linked with insulin resistance, obesity, cardiovascular disease, hormonal changes, and overall metabolic health. This represents a broader evolution in medicine.
In reality every organ is in constant conversation with every other organ through hormones, immune signals, the nervous system, and countless chemical messengers — this is called organ cross-talk. A disturbance in one network often echoes throughout the entire body. For example, someone living with psoriasis may also have a higher risk of cardiovascular disease. People with insulin resistance may develop fatty liver, PCOS, high blood pressure, and type 2 diabetes, not as unrelated illnesses, but as different manifestations of overlapping biological processes.
Modern research is increasingly exploring exactly this idea. Systems biology, network medicine, psychoneuroimmunology study how diseases arise from disruptions in interconnected networks rather than isolated organs.
Diagnosis as patterns
A diagnosis points us toward a likely pattern of illness, but it cannot fully capture the complexity of an individual human being. Two people with the same diagnosis may have different contributing factors, different symptoms, different responses to treatment, and different paths to recovery.
As science continues to uncover the body's remarkable interconnectedness, healthcare may gradually move away from viewing illness as isolated problems of individual organs and toward seeing health and disease as properties of the whole person. The body has always functioned as one integrated system. Research is simply beginning to catch up.