It has been proposed to apply blisters to abscesses, with a view of producing the absorption of pus. On this point Sir B. Brodie¶ observes, " I have blistered abscesses, and kept them open; but depend upon it pus is never absorbed, though serum is;" and he adds, that in those cases in which a tumour has appeared, and been supposed to contain pus, which has been removed by the application of blisters, there has been a mistake in diagnosis, and that no pus was present. In the case of Indolent Bubo, a blister sometimes appears useful.
* Clin. Chirurg., t. ii. p. 320. Elements of Surg., part i. p. 78. Dis. of the Skin, p. 210. § Med. Times, vol. xv. p. 218.
|| Lectures, Med. Times, vol. xvi. 1847. ¶ Op. cit.
Graves* speaks highly of the value of blisters. After the application of leeches to the painful part, when the local pain, swelling, and tenderness have been partially subdued by their means, and when leeching is no longer proper, certain and almost immediate benefit, he observes, may be obtained by blistering. Blisters, he adds, are better than leeches, not only because they possess the power of removing pain and swelling with more rapidity, but also because they do not leave the part in a weakened state; they have a powerful effect in removing these pains; and may be used in cases of Arthritis, where they have not been used heretofore.
2992. In Otitis, blisters behind the ears, stretching to the occiput, or on the nape of the neck, and either kept discharging or repeated, are often very serviceable. The same measures are often highly beneficial in Deafness depending upon circumscribed Inflammation of the Auditory Passage and Membrana Tympani. (Copland.)
2993.Blood-letting, the abstraction of blood from the system, either general or topical. The former includes venAesection and arteriotomy; and the latter, leeching, cupping, and scarification. It is to the first of these, or general blood-letting, that the following remarks principally refer.