Blood (haematology)
Bacteraemia
Infectious · Acute
The presence of bacteria in the bloodstream, which can be harmless and brief or lead to serious infection and sepsis.
GeoMed · Disease encyclopedia
Disease encyclopedia
Causes, symptoms, diagnosis, treatment approaches and prevention for common conditions. Browse A–Z, by body system, or search.
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Skin (integumentary system)
Basal cell carcinoma
Non-infectious · Chronic
The most common type of skin cancer, which grows slowly on sun-exposed skin and rarely spreads.
Digestive system
Barrett's oesophagus
Non-infectious · Chronic
A change in the lining of the lower food pipe caused by long-term acid reflux, which slightly increases the risk of oesophageal cancer.
Reproductive system
Bartholin's cyst
Non-infectious · Acute
A fluid-filled swelling at the entrance to the vagina caused by a blocked Bartholin's gland, which can become infected and form an abscess.
Blood (haematology)
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Blood (haematology)
Anaemia
Non-infectious · Chronic
Imagine feeling exhausted all the time, no matter how much sleep you get. You might think it's stress or just part of life, but for millions of people worldwide, it could be anemia. In fact, the World Health Organization estimates that over 1.6 billion people suffer from anemia, with iron-deficiency anemia being the most common. It's not just about feeling tired; it can lead to serious health issues if left untreated. This condition is more than just a minor inconvenience, it’s a signal from your body that something needs attention. Let’s dive into what anemia really is, its causes, symptoms, and how you can take action to prevent and treat it. Your health is too important to ignore!
Blood (haematology)
Bacteraemia
Infectious · Acute
The presence of bacteria in the bloodstream, which can be harmless and brief or lead to serious infection and sepsis.
Cardiovascular system
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Cardiovascular system
Aortic coarctation in adults
Non-infectious · Chronic
A narrowing of the aorta, present from birth, that may only be found in adulthood, often because of high blood pressure in the arms.
Cardiovascular system
Beriberi
Non-infectious · Acute or chronic
A condition caused by severe lack of vitamin B1 (thiamine), affecting the heart, nerves or brain.
Cardiovascular system
Bicuspid aortic valve
Non-infectious · Chronic
A heart valve present from birth with two leaflets instead of three, which can become narrowed or leaky and is linked to aortic enlargement.
Respiratory system
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Respiratory system
Blastomycosis
Infectious · Acute or chronic
A fungal infection caught by breathing in spores from soil, usually affecting the lungs and sometimes spreading to the skin and bones.
Urinary system
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Urinary system
Benign prostatic hyperplasia
Non-infectious · Chronic
Non-cancerous enlargement of the prostate gland in older men, which can cause problems passing urine.
Urinary system
Bladder cancer
Non-infectious · Chronic
Cancer that starts in the lining of the bladder, most often causing painless blood in the urine, and strongly linked to smoking.
Digestive system
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Digestive system
Anal cancer
Non-infectious · Chronic
A rare cancer that starts in the tissues of the anus, most often linked to human papillomavirus (HPV) infection.
Digestive system
Anal fissure
Non-infectious · Acute or chronic
A small tear in the lining of the anus that causes sharp pain and bleeding when passing stools.
Digestive system
Barrett's oesophagus
Non-infectious · Chronic
A change in the lining of the lower food pipe caused by long-term acid reflux, which slightly increases the risk of oesophageal cancer.
Digestive system
Bile acid diarrhoea
Non-infectious · Chronic
Chronic watery diarrhoea caused by too much bile acid reaching the large bowel.
Nervous system
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Nervous system
Autonomic neuropathy
Non-infectious · Chronic
Damage to the nerves that control automatic body functions such as blood pressure, heart rate, digestion, bladder and sweating.
Nervous system
Bell's palsy
Non-infectious · Acute
Sudden weakness or paralysis of the muscles on one side of the face, caused by inflammation of the facial nerve.
Nervous system
Benign essential blepharospasm
Non-infectious · Chronic
A neurological condition causing involuntary, repeated blinking and forceful closing of the eyelids.
Nervous system
Benign paroxysmal positional vertigo
Non-infectious · Acute or chronic
Brief spells of spinning dizziness triggered by changes in head position, caused by loose crystals in the inner ear.
Musculoskeletal system
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Musculoskeletal system
Arthritis
Non-infectious · Chronic
By 2030, arthritis is expected to affect over 78 million adults in the United States alone." Let that sink in. That’s nearly one in four people grappling with joint pain, stiffness, and swelling. If you’ve watched a loved one, or maybe even yourself, struggle with arthritis, you know it’s more than just an inconvenience. It can be life-altering. But here’s the good news: understanding arthritis, its symptoms, and treatment options can make a world of difference. Whether it’s your grandmother’s swollen hand joints or your own aching knees, there are actionable steps to regain control and improve quality of life. Let’s unpack everything you need to know about arthritis.
Musculoskeletal system
Baker's cyst
Non-infectious · Chronic
A fluid-filled swelling behind the knee, usually linked to arthritis or a cartilage tear inside the knee joint.
Musculoskeletal system
Immune system
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Blood (haematology)
Bacteraemia
Infectious · Acute
The presence of bacteria in the bloodstream, which can be harmless and brief or lead to serious infection and sepsis.
Immune system
Behçet's disease
Non-infectious · Chronic
A rare, long-term inflammatory condition causing blood vessel inflammation, with mouth and genital ulcers, eye inflammation and skin problems.
Skin (integumentary system)
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Skin (integumentary system)
Basal cell carcinoma
Non-infectious · Chronic
The most common type of skin cancer, which grows slowly on sun-exposed skin and rarely spreads.
Respiratory system
Blastomycosis
Infectious · Acute or chronic
A fungal infection caught by breathing in spores from soil, usually affecting the lungs and sometimes spreading to the skin and bones.
Eyes and vision
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Immune system
Behçet's disease
Non-infectious · Chronic
A rare, long-term inflammatory condition causing blood vessel inflammation, with mouth and genital ulcers, eye inflammation and skin problems.
Nervous system
Benign essential blepharospasm
Non-infectious · Chronic
A neurological condition causing involuntary, repeated blinking and forceful closing of the eyelids.
Eyes and vision
Blepharitis
Non-infectious · Chronic
Long-term inflammation of the eyelid margins, causing red, itchy, crusty eyelids and gritty eyes.
Ear, nose and throat
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Nervous system
Benign paroxysmal positional vertigo
Non-infectious · Acute or chronic
Brief spells of spinning dizziness triggered by changes in head position, caused by loose crystals in the inner ear.
Reproductive system
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Reproductive system
Balanitis
Infectious · Acute
Inflammation of the head of the penis, often caused by infection, irritation or poor hygiene, most common in uncircumcised males.
Reproductive system
Bartholin's cyst
Non-infectious · Acute
A fluid-filled swelling at the entrance to the vagina caused by a blocked Bartholin's gland, which can become infected and form an abscess.
Urinary system
Benign prostatic hyperplasia
Non-infectious · Chronic
Non-cancerous enlargement of the prostate gland in older men, which can cause problems passing urine.
Mental health
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Mental health
Binge eating disorder
Non-infectious · Chronic
An eating disorder involving regular episodes of eating large amounts of food while feeling out of control, followed by distress.
Mental health
Bipolar disorder
Non-infectious · Chronic
A long-term mental health condition causing episodes of depression and episodes of mania or hypomania.
Mental health
Body dysmorphic disorder
Non-infectious · Chronic
A mental health condition in which a person spends a lot of time worrying about perceived flaws in their appearance that others cannot see or consider minor.
Mouth and teeth
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Immune system
Behçet's disease
Non-infectious · Chronic
A rare, long-term inflammatory condition causing blood vessel inflammation, with mouth and genital ulcers, eye inflammation and skin problems.