Diseases & Health Conditions
Educational information about diseases, symptoms, and related treatments
Crohn’s disease
Overview Crohn’s disease is a long-term condition that causes inflammation of the lining of the dige...
Croup
Overview Croup is a childhood condition that affects the windpipe (trachea), the airways to the lung...
Cystic fibrosis
Overview - About cystic fibrosis - Symptoms of cystic fibrosis - Causes of cystic fibrosis - Diagnos...
Cystitis
Overview Cystitis is a type of urinary tract infection (UTI) that affects the bladder. It’s common,...
Deafblindness
Overview - About deafblindness - Signs and symptoms of deafblindness - Causes of deafblindness - Dia...
Deep vein thrombosis
Overview Deep vein thrombosis (DVT) is a blood clot that develops within a vein, usually in the leg....
Degenerative cervical myelopathy
Overview This information may be useful for those who have been medically diagnosed with degenerativ...
Dehydration
Overview Dehydration is when your body loses more fluid than you take in. It can be serious if it is...
Delirium
Overview Delirium (acute confusional state) is when someone’s mental function has a sudden change. I...
Dementia
Overview - Home - Illnesses and conditions - Symptoms and self-help - Tests and treatments - Healthy...
Dementia with Lewy bodies
Overview Dementia is an an umbrella term for a range of diseases that affect different brain functio...
Dental abscess
Overview A dental abscess is a collection of pus that can form inside the teeth, in the gums, or in...
Depression
Overview Depression is a mental health condition that has a range of symptoms. These can affect how...
Dermatitis herpetiformis
Overview Dermatitis herpetiformis (DH) is an autoimmune skin condition that can be linked to coeliac...
Diabetic foot issues
Overview Having diabetes means you have a higher risk of developing issues with your feet. This is b...
Diabetic ketoacidosis (DKA)
Overview Diabetic ketoacidosis (DKA) is a life-threatening condition that can affect people with dia...
Diabetic retinopathy
Overview - About diabetic retinopathy - Stages of diabetic retinopathy - Treating diabetic retinopat...
Diarrhoea in adults
Overview العربية | Polski | Română | 繁體中文 | اردو Return to Symptoms Next Review Date: Find your...
Diarrhoea in children and babies
Overview Return to Symptoms Next Review Date: Find your local services Search for a service near yo...
Discoid eczema
Overview Discoid eczema (discoid dermatitis) is a long-term skin condition that usually affects adul...
Diverticular disease and diverticulitis
Overview - About diverticular disease and diverticulitis - Symptoms of diverticular disease and dive...
Dizziness (lightheadedness)
Overview Dizziness (lightheadedness) is a common symptom. It’s not usually a sign of anything seriou...
Dry mouth
Overview It’s normal to occasionally have a dry mouth if you’re dehydrated or feeling nervous. A per...
Duchenne muscular dystrophy (DMD)
Overview Duchenne muscular dystrophy (DMD) is a muscle wasting condition that causes progressive mus...