Every year love to go to the beach vacation Tom, the other day just came home from the beach, but found that their bodies were full of rashes. Tom is very puzzled as, to why in previous years he has not been sunburned, and also has not heard of sunburn will be sunburned to the rash ah. So, Tom went to the hospital ready to take a good look at the doctor's careful questioning and investigation, but it was Tom's stomach medicine "unhappy" sun trouble. What's going on?
It turns out that Tom is taking a drug, and this drug even if it is eaten into the stomach, into the body, but also "can not stand" the sun. This phenomenon is called adverse drug photosensitivity reactions. Adverse drug photosensitivity reaction refers to the use of certain drugs after exposure to ultraviolet light or visible light triggered by the rash, drug photosensitivity adverse reaction is like a "bomb", even if the drug is into the body, but also can not withstand the sun's exposure to the sun. This "bomb" will be in the use of certain drugs after exposure to ultraviolet light or visible light, detonated, so that the skin rash, can be said to be drug-induced adverse skin reactions in the "ace killer". Of course, not everyone who takes medications will experience this condition.
Photosensitive drug rash is like a "trio" of three conditions: allergies, photosensitizing medications, and sun exposure. Just as three notes need to be perfectly coordinated to play a trio, these three conditions need to be perfectly coordinated to trigger photosensitive drug rash.
The pathogenesis of photosensitive drug rash is like a complex musical score, with different notes intertwining to form different melodies. The photoallergic reaction is like a beautiful symphony, conducted by the immune system, which is played only by individual patients taking this class of drugs. The phototoxic reaction, on the other hand, is like a harsh noise, not directed by the immune system, and can trigger adverse reactions whenever the dose of the drug taken and the amount of sunlight received reaches a certain threshold. Just as the harshness of the noise varies, so does the severity of the phototoxic reaction.
In a nutshell, photosensitive drug rash is like a piece of music that needs a trio to be played; three conditions need to work together perfectly to trigger an adverse reaction. The reaction may vary from person to person, from a beautiful symphony to an ear-splitting noise. Many drugs are "photophobic", such as some psychotropic drugs, analgesic and anti-inflammatory drugs, and diuretics. Diagnosing photosensitive drug rash is like solving a crime. It requires a history of the patient's illness and medication use, a physical examination, and a variety of tests to find the real "culprit". Most photosensitive drug rashes are like "short-lived nightmares", and once diagnosed, stopping the medication that is causing the rash is like cutting off the source of the "nightmare". For mild to moderate photosensitive drug rashes, cold compresses, soothing lotions, and topical hormone applications can be used as if to give the "nightmare" a cold compress to soothe the panic.
For more severe cases of photosensitive rash, oral antihistamines (loratadine, cetirizine) and hormones can be prescribed to quickly relieve the rash, like bringing in a "superhero" to quickly defeat the "nightmare".
Of course, in some cases, it may not be possible to stop the medication immediately, but we can also reduce the risk of photosensitivity by avoiding sun exposure, such as wearing protective clothing and sunscreen, which is like putting a strong protective suit on a "superhero". In short, photosensitive drug rash is nothing to be afraid of, as long as the diagnosis is made promptly and the right treatment is applied, you can quickly get rid of the "nightmare".
