Which of the following drugs may cause discolouration of nail beds and mucous membranes:
- A- Tetracycline
- B- Chloroquine
- C- Doxycycline
- D- Rifampicin***
The drug that may cause discolouration of nail beds and mucous membranes is B- Chloroquine.
Chloroquine is an antimalarial drug that can also be used to treat certain autoimmune diseases, such as lupus and rheumatoid arthritis. It is known to cause a number of side effects, including pigmentation changes in the skin and mucous membranes. This is due to the fact that chloroquine can increase the production of melanin, the pigment that gives skin and hair its color.
Other drugs:
The other drugs on the list are less likely to cause discolouration of nail beds and mucous membranes. Tetracycline and doxycycline are antibiotics that can also cause tooth discoloration, but they are not known to cause the same type of pigmentation changes as chloroquine. Rifampicin is an antibiotic that can cause a variety of side effects, including orange discoloration of the urine, but it is not known to cause discolouration of the nail beds and mucous membranes.
%20is%20a%20laboratory%20test%20important%20in%20dentistry.jpg)