Interstate medical journal . izefrom 20 microns to 80 microns (corn pollen). portance compared with the others, not only on account of theless active hay fever reaction, but also on account of its more re-stricted geographical distribution. PRACTICAL APPLICATION OF THE HAY FEVER GROUPS. If a patient is found sensitive to the pollen of the foxtail grass{Chsetochloa glauca), our investigations have shown that he willalso react to the pollen of other members of this group. The ex- Scheppegrell: Notes on the Treatment of Hay Fever 491 tract may, therefore, be prepared from the foxtail grass (Chset
Interstate medical journal . izefrom 20 microns to 80 microns (corn pollen). portance compared with the others, not only on account of theless active hay fever reaction, but also on account of its more re-stricted geographical distribution. PRACTICAL APPLICATION OF THE HAY FEVER GROUPS. If a patient is found sensitive to the pollen of the foxtail grass{Chsetochloa glauca), our investigations have shown that he willalso react to the pollen of other members of this group. The ex- Scheppegrell: Notes on the Treatment of Hay Fever 491 tract may, therefore, be prepared from the foxtail grass (Chseto-chloa glauca), timothy (Phleum pratense), rye, or other membersof this group, or a combination of several of these. In the same, manner, if the patient is sensitive and exposed tothe common ragweed, he may be treated with its extract, or thatof the giant ragweed (Ambrosia trifida), marsh elder (Iva ciliata),or other members of this group or their combination. While the golden rod (Solidago) is not wind-pollinated, and can-. Fig. 3.—Pollen of mugwort {Artemisia heterophylla). Magnified 500 diameters. Size,20 microns. Important hay fever pollen of the Pacific and Rocky Mountainstates. Characteristic in appearance and reaction of the Artemisia group. not. therefore, cause hay fever except on direct inhalation or ex-cessive exposure, as when used for room decorations, its pollen re-sembles that of the ragweed morphologically and biologically, andits extract may therefore be used in combination with that of theragweeds, which is the case with some of the commercial pollenextracts. The only objection is that it tends to perpetuate thepopular myth that it is a cause of hay fever. In most cases the skin reaction is a fair index of the susceptibilityof the patient to pollen inhalation. It is, therefore, also a con- 492 INTERSTATE MEDICAL JOURNAL venient method of checking the effects of the prophylactic injec-tions. When the skin reaction disappears, which may occur afterthe fifth t
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Keywords: ., bookcentury1900, bookdecade1910, bookidinter, booksubjectmedicine
