This section groups major medical conditions by clinical system so visitors can review common disorders, symptom patterns, diagnostic evaluation, and standard management principles in a structured format.
Each category presents general medical information only, using the same structure and the same disease inventory across all available languages.
Neoplastic diseases marked by uncontrolled cell growth, tissue invasion, and possible metastatic spread.
Malignant diseases include solid tumors and hematologic cancers. Presentation depends on the primary site, stage, and pattern of spread.
Hormonal disorders involving the thyroid, pancreas, adrenal glands, pituitary gland, and gonads.
Endocrine disorders affect metabolism, growth, stress response, reproduction, and glucose regulation. They may result from hormone deficiency, hormone excess, autoimmunity, or metabolic dysfunction.
Autoimmune and inflammatory disorders that damage joints, connective tissue, vessels, skin, muscles, or glands.
Immune system disorders develop when immune activity becomes misdirected, excessive, or persistently inflammatory. They may affect one organ or multiple body systems.
Disorders of the airways, lung tissue, and breathing mechanics that impair ventilation or gas exchange.
Respiratory diseases may involve the airways, pulmonary parenchyma, or sleep-related breathing control. Presentation ranges from episodic wheeze to chronic dyspnea and recurrent infection.
Disorders of the esophagus, stomach, small bowel, colon, and rectum that affect digestion and bowel habit.
Gastrointestinal disorders involve the hollow digestive tract and may cause upper abdominal symptoms, altered bowel habit, bleeding, bloating, pain, or chronic intestinal inflammation.
Disorders of the kidneys, bladder, urinary tract, and lower urinary outflow that affect filtration and urination.
Urinary and renal disorders may involve infection, inflammation, obstruction, stone disease, bladder dysfunction, or chronic loss of kidney function.
Gynecologic, andrologic, fertility-related, hormonal, and sexual-health disorders affecting reproductive function.
Reproductive health disorders involve the female or male reproductive system, fertility regulation, menstrual function, pelvic anatomy, or sexual function.
Disorders affecting the liver, gallbladder, pancreas, and intestinal absorption rather than the hollow bowel alone.
Digestive system disorders in this section focus on hepatobiliary, pancreatic, and absorption-related disease. They may alter bile flow, enzyme activity, metabolic processing, or nutrient uptake.
Inflammatory, pigmentary, infectious, and chronic skin disorders affecting the visible skin barrier and appendages.
Dermatologic disorders may affect barrier function, immune activity, pigmentation, sebaceous glands, or superficial infection. Presentation commonly includes itch, rash, scaling, pigment change, papules, plaques, or pustules.
Disorders affecting the brain, spinal cord, peripheral nerves, and neural pathways involved in movement, sensation, and cognition.
Neurologic disorders include conditions involving the central and peripheral nervous system, with effects on sensation, motor function, balance, speech, cognition, headache patterns, and episodic neurologic events.
This overview is organized as a general medical information page, focused on the clinical group, representative disorders, and the standard pathways of evaluation and follow-up.
Each category follows the same section order: clinical overview, included disorders, common manifestations, diagnostic evaluation, standard management overview, and related categories. That makes it easier for visitors to compare organ systems and understand how similar symptoms may arise from very different groups of disease.
The same category list and the same disease inventory are preserved in every language version of the site. This keeps the medical meaning aligned while allowing each language to use natural clinical wording for the same concepts.
The structure is designed both for quick orientation and for slower, more detailed reading. A visitor can start with a broad category, review representative diseases, and then connect symptoms, risks, diagnostics, and follow-up within one coherent medical frame.
Because every category uses the same template, the pages can be read individually or as one connected index. That is especially helpful when symptoms overlap across more than one body system and a broader diagnostic frame is needed.
The source list points to broad public medical references used for general disease descriptions and category-level structure. It is intended to support factual consistency across languages, not to replace direct clinical evaluation.
MedlinePlus, NHS Conditions, MSD Manual Consumer Version, and the relevant national institute pages referenced for each category.
Healtech organizes its informational condition library into ten categories: malignant diseases, endocrine disorders, immune system disorders, respiratory diseases, gastrointestinal disorders, urinary tract and renal disorders, reproductive health disorders, digestive system disorders, dermatologic disorders, and neurologic disorders. Each category page lists representative conditions with symptoms, diagnostics, and management context.
Start from the body system your concern relates to — for example breathing (respiratory), digestion (gastrointestinal or digestive), kidneys and bladder (urinary), or hormones (endocrine). Each category page lists representative conditions so you can confirm you are in the right place before reading further.