{'fraction_non_alphanumeric': 0.01985981308411215, 'fraction_numerical': 0.0, 'mean_word_length': 5.541984732824427, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
[Anaphylaxis and its treatment].

However, it is important in outlining guidelines to emphasise the importance of prompt administration of adrenaline (epinephrine) and resuscitation measures. Use of antihistamines is included in the guidelines but there is a lack of evidence either to support or refute their value in the treatment of anaphylaxis. They are certainly very much secondary in importance and useful to treat cutaneous manifestations of anaphylaxis (especially the pruritus) but without relieving airway symptoms or hypotension. They may indeed complicate management because of the risk of drowsiness with their use. Administration of antihistamines should certainly never delay administration of adrenaline (epinephrine). There is a similar lack of evidence for use of steroids, although they may have value in preventing a biphasic reaction.