I had an attack of sopak garam, or hives last week. The last time I had it was in 2006. This time, a visit to the doctor and a jab took care of it.
I just knew that thing is known as hives, thanks to Joe a.k.a Screwboy. It is also known as gegata and urticaria. Boboe pointed out that it is believed hives is caused by one being sprayed by the vampires.
Interestingly, a Google search led to a revelation that apart from allergies, stress is also a common cause of hives. See here.