What's the difference between swelling and wheal?

Swelling


Definition:

  • (p. pr. & vb. n.) of Swell
  • (n.) The act of that which swells; as, the swelling of rivers in spring; the swelling of the breast with pride.
  • (n.) A protuberance; a prominence
  • (n.) an unnatural prominence or protuberance; as, a scrofulous swelling.

Example Sentences:

  • (1) Furthermore echography revealed a collateral subperiosteal edema and a moderate thickening of extraocular muscles and bone periostitis, a massive swelling of muscles and bone defects in subperiosteal abscesses as well as encapsulated abscesses of the orbit and a concomitant retrobulbar neuritis in orbital cellulitis.
  • (2) Undaunted by the sickening swell of the ocean and wrapped up against the chilly wind, Straneo, of Woods Hole Oceanographic Institution, one of the world's leading oceanographic research centres, continues to take measurements from the waters as the long Arctic dusk falls.
  • (3) Axons emerge from proximal dendrites within 50 microns of the soma, and more rarely from the soma, in a tapering initial segment, commonly interrupted by one or two large swellings.
  • (4) It is a specific clinical picture with extensive soft tissue gas and swelling of the forearm.
  • (5) Psychiatric morbidity is further increased when adjuvant chemotherapy is used and when treatment results in persistent arm pain and swelling.
  • (6) Chromatolysis and swelling of the cell bodies of cut axons are more prolonged than after optic nerve section and resolve in more central regions of retina first.
  • (7) At 7 days axonal swellings were infrequently observed and the main structural feature was a reduction in myelin thickness in affected nerve fibers.
  • (8) In the companion paper, we quantitatively account for the observation that the ability of a solute to promote fusion depends on its permeability properties and the method of swelling.
  • (9) Admission venom levels also correlated with the extent of local swelling and the occurrence of tissue necrosis at the site of the bite.
  • (10) After 40 minutes of coronary occlusion and 20 minutes of reflow, significant cardiac weight gain occurred in association with characteristic alterations in the ischemic region, including widespread interstitial edema and focal vascular congestion and hemorrhage and swelling of cardiac muscle cells.
  • (11) The intensity of involvement varies in different arteries, localized swelling is of particular importance as a measure of atherosclerotic involvement.
  • (12) The DTH responses were induced by subcutaneous injection of allogeneic epidermal cells (ECs) and were assayed by footpad swelling.
  • (13) Adjunctive usage of elastic stockings and intermittent compression pneumatic boots in the perioperative period was helpful in controlling leg swelling and promoting wound healing.
  • (14) (1970) Endocrinology 87, 993--999), in stimulating both mitochondrial protein synthesis and swelling.
  • (15) Rapid swelling of the knee following a blow or twisting injury is considered a significant injury.
  • (16) Attachment appeared to involve a very close physical proximity of treponemes to the cultured cells; at the site of attachment, no changes such as swelling or indentation of the cultured cell surface were observed.
  • (17) The method is based upon osmotic swelling, sonication and centrifugation in sucrose.
  • (18) By contrast, all the semen samples that fertilized oocytes showed a 60% or higher reaction in the hypoosmotic swelling test, whereas the majority of the "infertile" semen samples showed less than 60% swelling.
  • (19) The changes included swelling, blunting, and flattening of epithelial foot processes, were accompanied by decreased stainability of glomerular anionic sites, and were largely reversed by subsequent perfusion with the polyanion heparin.
  • (20) After 3-5 days of side-arm traction, swelling had usually diminished sufficiently to allow the elbow to be safely hyperflexed to stabilize the fracture after elective closed reduction.

Wheal


Definition:

  • (n.) A pustule; a whelk.
  • (n.) A more or less elongated mark raised by a stroke; also, a similar mark made by any cause; a weal; a wale.
  • (n.) Specifically (Med.), a flat, burning or itching eminence on the skin, such as is produced by a mosquito bite, or in urticaria.
  • (n.) A mine.

Example Sentences:

  • (1) Three patients reacted with a wheal size greater than or equal to a histamine control at a dilution of 1:1,000 and 3 patients at 1:100.
  • (2) The validation of the VSC technique with venous occlusion plethysmography (VOP) showed that the increase of time of disappearance of the wheals is well correlated with the increase of capillary permeability demonstrated by VOP.
  • (3) Cimetidine, an H2-receptor antagonist slightly reduced the effect of clonidine on the wheal and flare reaction.
  • (4) Numerous mast cells were degranulated in late wheals, as shown by electron microscopy.
  • (5) The wheal and erythema reaction caused by intracutaneous application of 5 mug histamine can be inhibited by applying fenoterol in doses from 100--400 mug in form of a metered aerosol on the skin 5 min before the injection of histamine.
  • (6) Treatment with astemizole, as measured at the end point of each patient's treatment and compared to placebo, resulted in significant improvement of pruritus, erythema, number of wheals, frequency of urticarial attacks, and control of urticaria (p less than or equal to 0.03).
  • (7) The surface areas of the wheal and flare responses were measured by planimetry.
  • (8) Substance P produces dose-related wheal and flare reactions in human skin.
  • (9) Clinically, they are characterised by an immediate wheal and flare or a delayed papular to eczematous process.
  • (10) The flare response to SP and histamine was suppressed by capsaicin pretreatment whereas the wheal was enlarged.
  • (11) Histamine caused dose-related increases in blood flow and in areas of wheal and erythema in human skin.
  • (12) The patient developed an immediate type of skin reaction with erythema and whealing following monochromatic irradiation at 400 nm, but did not have any abnormal immediate skin reaction after exposure to natural sunlight.
  • (13) The allergen-triggered wheal and flare reaction in ovalbumin sensitized guinea pigs was potentiated by MK 422 and the late phase reaction of the inflammatory response was especially augmented.
  • (14) Except at high doses the local vasodilatation induced by CGRP was not associated with a wheal and flare as seen with histamine, substance P, and VIP.
  • (15) Two other patients with sunlight-induced solar urticaria, who had an erythema-and-wheal reaction during and after exposure to sunlight, had no suppressive wave bands in either the UV or visible-light range.
  • (16) There were also 3 highly allergic children, with immediate hypersensitivity reactions to other food, who, despite having never been exposed to egg, developed large skin prick test wheals to egg white.
  • (17) It is concluded that the wheal need not be associated with the Provocation-Neutralisation technique, and that a neuropsychological basis for the Provocation-Neutralisation response should be explored.
  • (18) Pressure wheals were characterized by a mild mononuclear perivascular infiltrate and by patchy dermal infiltrates of eosinophils.
  • (19) Sections from the wheals of recent onset 24 hours old or less taken from 11 patients with urticaria were examined by electron microscopy.
  • (20) Five minutes after an id injection of PHA (bactophytohaemoagglutinin M, Difco, 1 mg), mix monilieae, mix tricophyton and PPD Berna, she showed an extensive wheal and flare reaction in the PHA injection area, eyelid oedema and respiratory distress.