A drug allergy occurs when the immune system reacts abnormally to a medication. Whether it’s a nonprescription drug, a prescription medication, or an herbal remedy, any drug can provoke an allergic response. While most drug allergies manifest as mild symptoms like hives or rashes, some cases can lead to severe, life-threatening reactions.
Dry eye disease, also known as keratoconjunctivitis sicca, is a common condition that affects millions of people worldwide. It occurs when the eyes do not receive adequate lubrication due to insufficient tear production or poor-quality tears.Dry eye disease refers to a disruption in the normal tear film, compromising the ocular surface. Tears play a crucial role in maintaining eye health by providing lubrication, nourishment, and protection against infections.
Dry macular degeneration, also known as atrophic macular degeneration, is a common eye disorder that primarily affects individuals over the age of 50. It leads to blurred or diminished central vision due to the gradual breakdown of the inner layers of the macula—the part of the retina responsible for clear vision in the direct line of sight.
Xerostomia, commonly known as dry mouth, occurs when the salivary glands fail to produce sufficient saliva, leading to discomfort and potential health issues. While occasional dry mouth is normal, chronic xerostomia may indicate an underlying health condition. Let’s explore the various aspects of this condition.
Dry skin, medically known as xeroderma, occurs when the skin lacks sufficient moisture. It can lead to a rough, itchy, and flaky texture. Let’s explore this condition in depth.
Dry socket, also known as alveolar osteitis, is a painful dental condition that occurs after tooth extraction. It typically arises when the protective blood clot at the extraction site fails to form, dislodges, or dissolves prematurely before proper healing. The absence of this clot exposes the underlying bone and nerves, leading to intense pain and discomfort.
Desmoplastic small round cell tumors (DSRCT) are exceptionally rare cancers that typically originate in the abdomen. Although they primarily affect the peritoneum (the tissue lining the abdominal cavity), they can also occur in other areas of the body. Let’s delve into the specifics:
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Definition:
- DSRCT is a type of soft tissue sarcoma characterized by small, round cancer cells surrounded by scar-like tissue.
- These tumors often present as multiple nodules within the peritoneum.
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Incidence and Demographics:
- DSRCT predominantly affects young males and boys.
- The exact incidence is uncertain due to its rarity.
Ductal carcinoma in situ (DCIS) represents the earliest form of breast cancer. It arises within the milk ducts of the breast but has not yet invaded surrounding tissues. Early detection and appropriate management are crucial to prevent progression to invasive breast cancer.
Dumping syndrome is a gastrointestinal disorder characterized by rapid gastric emptying, where food, especially high-sugar meals, moves too quickly from the stomach into the small bowel. It commonly occurs after certain surgeries involving the gastrointestinal tract, such as gastric bypass or gastrectomy.
Dupuytren contracture is a progressive hand condition characterized by abnormal thickening of the skin in the palm. It primarily affects the two fingers farthest from the thumb, causing them to bend toward the palm. Let’s explore this condition in depth:
Dural arteriovenous fistulas (dAVFs) are abnormal connections between arteries and veins within the dura mater—the tough covering over the brain or spinal cord. These irregular passageways can lead to serious complications, including bleeding in the brain. Let’s explore dAVFs in more depth:
Dust mite allergy is an immune system response triggered by tiny bugs commonly found in house dust. These microscopic creatures, closely related to ticks and spiders, thrive in warm, humid environments. Common signs of dust mite allergy include sneezing, a runny nose, and itchy eyes. Many individuals with this allergy also experience asthma symptoms, such as wheezing and difficulty breathing.
Dysarthria is a speech sound disorder resulting from neurological injury to the motor component of the motor–speech system. It affects the ability to articulate sounds and pronounce words clearly. Individuals with dysarthria often experience slurred speech and difficulty controlling their vocal muscles.
Dyshidrosis, also known as dyshidrotic eczema or pompholyx, is a chronic skin condition characterized by small, fluid-filled blisters that appear on the palms of the hands, sides of the fingers, and sometimes on the soles of the feet. These itchy blisters tend to recur and can significantly impact a person’s quality of life.