Disease and red-flag library

Common diseases, rare diseases, misses, wrong diagnosis and symptoms that deserve review.

Created with Anonamed, linked with TheTreatments.com.

Search across heart, lung, gut, liver, kidney, infections, STIs, autoimmune, bone, skin, brain, eye, ear, endocrine, blood and mental health conditions. This is a map of diseases, red flags and diagnostic pitfalls, not a way to self-diagnose from the internet or AI.

Disease library

Search by name, system, age or body part

Use plain terms like “reflux”, “AF”, “eczema”, “kidney stone”, “frozen shoulder”, “carpal tunnel”, “depression”, “MASH” or “glaucoma”.

Area or body part

Click where the problem is

This filters the library by broad body region for an established or suspected diagnosis, which still may be wrong. It does not diagnose pain. Chest, upper-abdominal, back, jaw or arm symptoms can still be heart, lung, vascular or nerve disease.

Important caveats

Do not self-diagnose using the internet or AI.

Use this as orientation only

Names, symptoms and treatment lists are educational prompts after a diagnosis is established or suspected by a clinician. Diagnoses can still be wrong, incomplete or out of date; new red flags or poor response should trigger review.

Chest or upper-abdominal symptoms

Reflux, indigestion, gallbladder pain and panic can mimic heart disease. Chest pressure, breathlessness, sweating, fainting or pain radiating to jaw/arm/back needs urgent assessment.

Get a second opinion

For major surgery, lifelong immune therapy, cancer treatment, ablation, device implantation, long-term opioids or uncertain diagnosis, a second specialist opinion can be wise.

Trials change constantly

Clinical trial links open live searches. Trial drugs are not automatically better or safer, and many are only available in research settings.

Higher-risk groups

Babies, young children, older adults, pregnant people and immunocompromised patients can deteriorate faster and may need earlier testing, antivirals, antibiotics or hospital care.

Treatment is not just drugs

Many conditions need vaccines, procedures, surgery, rehabilitation, diet, exercise, sleep, psychology, wound care, infection control or social support.

Vaccines still matter

Measles, diphtheria, tetanus and pertussis can return when vaccination rates fall. Check local vaccine schedules with a clinician or public health source.

Diagnosis safety

A disease label can be wrong, incomplete or too narrow

Many conditions have overlapping symptoms. A normal first test does not always close the case, and a first diagnosis may miss another disease, a rare disease or the right specialty pathway.

Medication masking

Short-term symptom relief can be reasonable, but pain relievers, anti-nausea tablets, loperamide, sedatives, vitamins or supplements can mask progression or create side effects.

Right specialty

Fainting may be cardiac, neurological, endocrine, medication-related or metabolic. Gut symptoms can be cardiac. Anxiety-like symptoms can be endocrine or neurological.

Vitamins and supplements

More is not always safer. Vitamin A, D, iron, potassium, iodine and many herbal products can be toxic or interact with prescribed medicines.

Alternative medicine delays

Complementary care should not replace urgent assessment, cancer workup, antibiotics for serious infection, insulin, anticoagulation or proven emergency treatment.

Missed diagnosis

Persistent bleeding, weight loss, anemia, new lumps, progressive swallowing trouble, changing moles, night sweats or ongoing pain need proper investigation before disease progresses too far.

Wrong diagnosis

If the course is unusual, treatment is not working, symptoms evolve or the diagnosis was made without appropriate tests, ask for reassessment or a second opinion.

Wrong specialty

Some problems sit between specialties. Neurological symptoms may be endocrine, metabolic, vascular, autoimmune or medication-related; endocrine symptoms may be neurological or psychiatric. A different specialist type can change the answer.

Staged care before procedures

Many tendon, joint and nerve problems improve with time, physiotherapy, splints or injections. Surgery is usually for clear structural problems, progression or failure of appropriate non-surgical care.

Personal story

When the diagnosis is missed

This site grew from the experience of trying to make sense of symptoms when the usual tests were normal and the usual diagnoses did not quite fit.

One example: fainting, normal tests and insulinoma

The journey started with fainting and symptoms that seemed cardiac or neurological. A cardiologist found the usual tests normal. A neurologist also found no clear answer. Two endocrinology opinions did not reach the diagnosis. The eventual answer was an insulinoma, a very rare insulin-producing pancreatic neuroendocrine tumour. During documented hypoglycaemia, the insulin level was about 40 times the upper limit of normal.

The turning point was persistence: recognizing that the episodes still needed an explanation, then convincing a third expert professor to order specialized imaging, including a Dotatate PET scan. That scan helped find the lesion. Rare diseases are difficult because most clinicians quite reasonably start with common causes, but a rare diagnosis can still be real when the pattern keeps pointing there.

This is only one example of a wider problem. Some diseases are missed, diagnosed late or given the wrong label because they are rare, because early tests are normal, because symptoms cross specialty boundaries, or because the right measurement is not captured at the right time. People with hypoglycaemia, for example, can look faint, confused, anxious, neurological or psychiatric if low glucose and inappropriate insulin are not documented during an episode.

The lesson is not to self-diagnose from the internet or AI. The lesson is to use information to ask better questions, keep records, notice patterns, seek the right specialty, and ask for reassessment or a second opinion when the diagnosis does not fit. Normal tests can be reassuring, but they do not always close the case.

Related case report: Insulinoma presenting with post-prandial hypoglycaemia following fundoplication.

Hospital expertise

Most hospitals treat most diseases, but experience can matter

Common conditions are usually managed well through local GPs, clinics, emergency departments and general hospitals. Rare, complex, recurrent or high-risk diseases may benefit from a hospital or centre that sees that problem often.

When to ask

Ask about specialist centres when the diagnosis is rare, treatment is not working, surgery is complex, advanced imaging is needed, or several specialties disagree.

Examples

Cancer subtypes, rare endocrine tumours, congenital disease, transplant, complex neurology, advanced heart procedures, pancreatic disease and unusual infections often cluster expertise.

Reference hubs

Starting points for deeper reading

This draft uses guideline, patient-safety and disease-reference hubs. It is a starting bibliography, not an exhaustive evidence review. Last checked: 5 June 2026.