Diseases A to Z

The body fights against itself: A concise explanation of early symptoms that may indicate autoimmune diseases.

Causes and Symptoms What Is an Autoimmune Disease?

From dry eyes to abdominal pain, here is how autoimmune diseases subtly manifest and why early detection is crucial.

Signs of an Overactive Bladder, Causes and Treatment

Many Women Affected When to Address an Overactive Bladder and What Can Help

Bladder training, lifestyle, and diagnosis: The steps for managing an overactive bladder and when further evaluation is needed.

In epilepsy, sudden seizures occur due to excessive activity of nerve cells in the brain.

Neurological Disorder Causes, Symptoms and Progression of Epilepsy

Epilepsy is a neurological disorder that leads to seizures due to the overactivity of nerve cells.

Study Finds Evidence Certain chemicals may promote leukemia in children

Acute lymphoblastic leukemia is the most common childhood cancer. Research links "forever chemicals" to the disease.

Extremely Time-Critical Illness Intensive Care Specialist: "Everyone Should Know These 3 Key Symptoms of Sepsis"

Sepsis (blood poisoning) is the third leading cause of death in Germany. FITBOOK explains the causes, symptoms, and treatment.

FOP Begins with Inflammations and Drastically Alters the Body: Early Signs and Underlying Causes

Fibrodysplasia ossificans progressiva Rare Disease Where Muscles Turn Into Bone

The rare genetic disorder FOP often begins subtly. What symptoms appear and how daily life changes.

Lyme disease can be transmitted by ticks

Transmitted by Ticks Lyme Borreliosis - Causes, Symptoms and Treatment

Lyme borreliosis is a tick-borne disease. FITBOOK examines the symptoms that accompany it and explains treatment options.

Trichomioniasis is a sexually transmitted disease

Trichomonas Infection Trichomioniasis – a Common but Underestimated Sexually Transmitted Disease

Trichomioniasis is one of the most common sexually transmitted diseases worldwide. FITBOOK author Julia Kuntz explains the disease.

Tick-Borne Encephalitis TBE – When the Brain Becomes Inflamed

TBE, also known as tick-borne encephalitis, is transmitted by ticks - these are the symptoms of the disease.

Wear and Tear of Joint Cartilage Arthritis: Signs of the Incurable Disease and How to Prevent It

Arthritis is a joint disease often accompanied by pain. Learn about symptoms, causes, and treatment options.

Gout often manifests in the foot, particularly in the big toe.

Nearly 1 Million Infected in Germany Gout: Causes, Symptoms, and Prevention

Gout is a classic lifestyle disease. With certain behavioral tips, you can prevent this painful condition.

Three pathogens are currently causing numerous infections in Germany.

Infection Wave Rises These Three Pathogens Are Currently Making Germany Sick

In Germany, certain pathogens are currently causing a significant increase in acute respiratory infections.

EHEC is a highly infectious intestinal bacterium that can cause severe illnesses through contaminated food, water, or direct contact with animals.

Dangerous Bacteria EHEC Infection – Transmission, Symptoms and Treatment

Ehec infection with intestinal inflammation: Causes, symptoms, and transmission methods—what you need to know about the bacteria.

Lipoma Under the Skin How to Identify and Treat a Lipoma

Fatty lumps under the skin can be alarming. However, if it's a lipoma, there's usually no cause for concern.

After Deaths in Italy Botulism–This Bacterium Produces One of the Deadliest Toxins in the World

FITBOOK explains how botulism poisoning from snacks occurs—and why the toxin can be so quickly lethal.

Bursitis, also known as inflammation of the bursae, causes severe joint pain.

Bursitis Bursitis – Symptoms and Treatment

Knee or Elbow Pain? Understanding Inflammation, Causes, and Initial Treatment Tips

Highly contagious skin infection that can itch and cause pain

Highly Contagious Impetigo – Symptoms, Treatment and Prevention

The skin infection impetigo often occurs in children, is highly contagious, and can even affect adults.

Frequent urination can be a sign of type 1 diabetes.

Chronic Metabolic Disease Symptoms Indicating Type 1 Diabetes

Frequent urination and an intense feeling of thirst are just a few possible symptoms of Type 1 diabetes. Here's everything you need to know about the disease.

Constant stomach pain, bloating, and diarrhea? You might be suffering from leaky gut syndrome.

Causes and Treatment Symptoms Indicating Leaky Gut Syndrome–and Potential Subsequent Diseases

A leaky gut (increased intestinal permeability) is associated with numerous diseases and symptoms. What's behind it?

Tuberculosis has become rare in Germany, but the numbers are rising. The outcome of the disease is particularly life-threatening.

Global Threat Tuberculosis: Background, Spread and Symptoms

Despite low numbers, tuberculosis cases are rising again. FITBOOK reveals who is most affected and what offers protection

Corns are often mistaken for warts, but they require different treatment.

Clavus Corn – Causes, Symptoms and Treatment

What to do about corns? Learn how corns develop, how to identify them, and what remedies can help.

Athlete's foot can develop through small cracks in the skin when the foot is exposed to a lot of moisture.

Annoying Infection Recognizing, Treating, and Preventing Athlete's Foot

Athlete's Foot Is Often Taboo–Yet It's Widespread: How to Recognize, Treat, and Prevent It

Nail fungus can occur on both hands and feet. Treatment can take several months.

Symptoms, Treatment Early Signs to Recognize Nail Fungus

Nail fungus is persistent, unsightly–and can happen to anyone. How to identify, treat, and prevent it.

Physical limitations often don't occur alone; those affected frequently also experience mental health issues, sometimes even depression.

Pectus Excavatum What Is a Funnel Chest–and How Dangerous Is It?

A pronounced funnel chest not only leads to heart and lung issues but also causes mental stress. What you should know about Pectus excavatum.

Not Just Vomiting: Other Symptoms Indicate Bulimia

Life-Threatening Eating Disorder Bulimia: Causes, Symptoms and Consequences

Eating disorders not only create immense psychological distress for those affected; they can also be life-threatening.

Certain symptoms may indicate bladder cancer.

Causes and Treatment Signs That Indicate Bladder Cancer

FITBOOK explains the symptoms that may accompany bladder cancer, what is known about its causes, and how the disease is treated.

Food Poisoning Sick from Leftovers! The Dangers of Fried Rice Syndrome

Can leftover rice be safely eaten days later? When does it become dangerous? FITBOOK explains the fried rice syndrome.

Bird flu: symptoms - and the risk of a pandemic?

H5N1 Is the Risk of a Bird Flu Pandemic Increasing? This Is What an Expert Says

There are indications that the bird flu virus is mutating and being transmitted from humans to animals. Could the next pandemic happen?

Encephalitis (inflammation of the brain)

Brain inflammation Possible symptoms of encephalitis

Encephalitis, i.e. inflammation of the brain, can manifest itself through various symptoms. These are the warning signs.

Prader-Willi syndrome can cause abnormalities even in infants

Cause and course of the disease Signs that already indicate Prader-Willi syndrome in babies

Prader-Willi syndrome is a rare disease. Those affected can develop muscle weakness and be mentally impaired.