NEET MDS Shorts
48682
Oral Medicine
Obstructive jaundice is associated with increased cholesterol levels due to impaired cholesterol metabolism.
97052
Oral MedicineOral PrEP with regimens containing Tenofovir disoproxil fumarate (TDF) requires confirmation of adequate renal function, specifically a creatinine clearance of at least 60 mL/min, because TDF can affect kidney function in some individuals. While an HIV test is essential to confirm the person is negative for HIV before starting PrEP, the specific renal function check relates to the drug's safety profile.
23878
Oral Medicine
Cushing's syndrome is caused by prolonged exposure to high levels of cortisol, a hormone produced by the adrenal glands. Cortisol excess leads to symptoms such as moon facies, buffalo hump, truncal obesity, purple striae, and proximal muscle weakness, among others.
98831
Oral Medicine
Paget's disease is characterized by excessive and abnormal bone remodeling, which results in increased bone turnover. This increased turnover is reflected in the serum by high levels of alkaline phosphatase, an enzyme involved in bone formation. While calcium and phosphorus levels may be affected in some cases, the hallmark biochemical abnormality in Paget's disease is elevated alkaline phosphatase.
15929
Oral medicineCervical rib syndrome commonly produces vascular manifestations due to compression of the subclavian artery and vein. This can cause arm claudication, cold intolerance, and vascular insufficiency. Neurological symptoms may also occur but vascular manifestations are more common.
95542
Oral Medicine
Nystatin and clotrimazole target ergosterol in the fungal cell membrane, leading to increased permeability and death of the fungal cells. This mechanism is specific to fungal cells and does not harm human cells, which lack ergosterol in their membranes.
23647
Oral medicineThe term "potato tumour" is often used to describe a chemodectoma, which is a type of tumor that arises from the chemoreceptor cells of the carotid body. These tumors can be vascular and may have a lobulated appearance, resembling a potato. They are typically benign but can cause symptoms due to their location and pressure effects on surrounding structures.
28076
Oral Medicine
The characteristic gait abnormality in Huntington's disease is the choreic gait, which is disjointed and poorly coordinated with a "dancing" quality.
10324
Oral Medicine
Huntington's disease is characterized by two main clinical features: chorea (involuntary, irregular, and sudden jerky movements) and behavioral disturbances. These symptoms may occur alone or in combination, with the choreic movement disorder typically becoming more pronounced over time.
67305
Oral MedicineLead poisoning causes microcytic, hypocromic anemia by interfering with heme synthesis and globin synthesis, and by increasing red blood cell destruction. The primary mechanism is the inhibition of several key enzymes in the heme biosynthesis pathway, notably \(\delta \)-aminolevulinic acid dehydratase (ALAD) and ferrochelatase. The inhibition of these enzymes leads to the accumulation of heme precursors and a decrease in the amount of heme available for incorporation into hemoglobin, resulting in anemia.