What's the difference between sheal and wheal?

Sheal


Definition:

  • (n.) Same as Sheeling.
  • (v. t.) To put under a sheal or shelter.
  • (v. t.) To take the husks or pods off from; to shell; to empty of its contents, as a husk or a pod.
  • (n.) A shell or pod.

Example Sentences:

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.

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