Dystonia

Dystonia

  Dystonia is a neurological movement disorder syndrome in which sustained or repetitive muscle contractions result in twisting and repetitive movements or abnormal fixed postures. The movements may resemble a tremor. Dystonia is often intensified or exacerbated by physical activity, and symptoms may progress into adjacent muscles. The disorder may be hereditary or caused by […]

Dysphagia

Dysphagia

  Dysphagia is the medical term for the symptom of difficulty in swallowing. Although classified under “symptoms and signs” in ICD-10, the term is sometimes used as a condition in its own right. People with dysphagia are sometimes unaware of having it. It may be a sensation that suggests difficulty in the passage of solids […]

Dyslexia

Dyslexia

  Dyslexia, also known as reading disorder, is characterized by trouble with reading despite normal intelligence. Different people are affected to varying degrees. Problems may include difficulties in spelling words, reading quickly, writing words, “sounding out” words in the head, pronouncing words when reading aloud and understanding what one reads. Often these difficulties are first […]

Dyshidrosis

Dyshidrosis

  Dyshidrosis, is a type of dermatitis, that is characterized by itchy blisters on the palms of the hands and bottoms of the feet. Blisters are generally one to two millimeters in size and heal over three weeks. However, they often recur. Redness is not usually present. Repeated attacks may result in fissures and skin […]

Dysarthria

Dysarthria

  Dysarthria is a motor speech disorder resulting from neurological injury of the motor component of the motor-speech system and is characterized by poor articulation of phonemes. In other words, it is a condition in which problems effectively occur with the muscles that help produce speech, often making it very difficult to pronounce words. It […]

Dwarfism

Dwarfism

  Dwarfism, also known as short stature, occurs when an organism is extremely small. In humans, it is sometimes defined as an adult height of less than 147 centimetres (4 ft 10 in), regardless of sex, although some individuals with dwarfism are slightly taller. Disproportionate dwarfism is characterized by either short limbs or a short […]

Dural Arteriovenous Fistulas (DAVF)

Dural Arteriovenous Fistulas (DAVF)

  A dural arteriovenous fistula (DAVF), is an abnormal direct connection (fistula) between a meningeal artery and a meningeal vein or dural venous sinus. In cases where there are multiple fistulas, the related term dural arteriovenous malformation (DAVM) is used. Characteristics Signs and Symptoms The most common signs/symptoms of DAVFs are: Pulsatile tinnitus Occipital bruit […]

Dupuytren’s Contracture

Dupuytren’s Contracture

  Dupuytren’s contracture is a condition in which one or more fingers become permanently bent in a flexed position. It usually begins as small hard nodules just under the skin of the palm. It then worsens over time until the fingers can no longer be straightened. While typically not painful some aching or itching may […]

Dumping Syndrome

Dumping Syndrome

  Dumping syndrome occurs when food, especially sugar, moves too quickly from the stomach to the duodenum—the first part of the small intestine—in the upper gastrointestinal (GI) tract. This condition is also called rapid gastric emptying. It is mostly associated with conditions following gastric or esophageal surgery, though it can also arise secondary to diabetes […]

Ductal Carcinoma in Situ (DCIS)

Ductal Carcinoma in Situ (DCIS)

  Ductal carcinoma in situ (DCIS), also known as intraductal carcinoma, is a pre-cancerous or non-invasive cancerous lesion of the breast. DCIS is classified as Stage 0. It rarely produces symptoms or a breast lump one can feel, and is usually detected through screening mammography. In DCIS, abnormal cells are found in the lining of […]

Dry Mouth (Xerostomia)

Dry Mouth (Xerostomia)

  Xerostomia, also known as dry mouth, is dryness in the mouth, which may be associated with a change in the composition of saliva, or reduced salivary flow, or have no identifiable cause. This symptom is very common and is often seen as a side effect of many types of medication. It is more common […]

Dry Macular Degeneration

Dry Macular Degeneration

  Macular degeneration, also known as age-related macular degeneration (AMD or ARMD), is a medical condition which may result in blurred or no vision in the center of the visual field. Early on there are often no symptoms. Over time, however, some people experience a gradual worsening of vision that may affect one or both […]

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