A patient with symptomatic urticaria pigmentosa who responded to nifedipine therapy is reported. Relief from cold-induced urtication and flushing was obtained with 10 mg taken orally three times daily. Calcium influx is an early step in the degranulation of mast cells. We hypothesize that the beneficial effect of nifedipine was due to calcium-channel blockade causing elevation of the mast cell threshold for degranulation.
This research output has an Altmetric Attention Score of 3. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 24 July 2020.
All research outputs
#9,515,460
of 27,778,980 outputs
Outputs from Journal of the American Academy of Dermatology
#5,377
of 12,924 outputs
Outputs of similar age
#3,096
of 10,429 outputs
Outputs of similar age from Journal of the American Academy of Dermatology
#7
of 23 outputs
Altmetric has tracked 27,778,980 research outputs across all sources so far. This one is in the 42nd percentile – i.e., 42% of other outputs scored the same or lower than it.
So far Altmetric has tracked 12,924 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 11.9. This one is in the 41st percentile – i.e., 41% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 10,429 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 6th percentile – i.e., 6% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 23 others from the same source and published within six weeks on either side of this one. This one is in the 1st percentile – i.e., 1% of its contemporaries scored the same or lower than it.
