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Query: UMLS:C0018681 (headache)
 56,091 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Sensitive innervation of the nasal fossae by the trigeminal nerves is not a simple passive system of information transmission, but also plays a considerable role in nasal physiology. An antidromic transmission mechanism is in fact added to the conventional centripetal transmission, leading to the release of neurotransmitters (P-substance and C.G.R.P.) at the level of the neuronasal nerve endings. These substances can cause inflammation and vasodilatation (sub-mucosal and perivascular) in certain sites of the 5th nerve, and stimulate the second parasympathetic neurone at the level of the sphenopalatine ganglion. Such phenomena, when they extend beyond physiology, can be the source of local pathology (rhinitis) or loco-regional pathology (headaches).
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PMID:[Sensitive innervation of the nasal mucosa: current concepts]. 197 92

In a national study of almost 7000 primary school children, parents' perceptions were used to test the hypothesis that the child's irritability was associated with food intolerance independently of other symptoms. After adjustment in a multiple regression analysis for asthma or wheeze, cough, eczema, hives, diarrhoea and vomiting, rhinitis, hay fever and headache, and the social factors of father's social class, maternal education and maternal age, a highly significant association between perception of food intolerance and irritability (P less than 0.001) remained. Though we cannot rule out that irritable children's parents could be biased towards diagnosing food intolerance the possibility that some children do have behavioural disturbance associated with reactions to food needs to be explored further, preferably with a double blind challenge assessment.
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PMID:Associations of excessive irritability with common illnesses and food intolerance. 236 72

Forty-six of 152 consecutive adult rhinitis patients had perennial nonallergic rhinitis (PNR). Eighty-five percent of those with PNR presented with nasal congestion, whereas 15% presented with rhinorrhea. Their mean age was 40.5 years (range = 21-77), and 74% were female. Patients with perennial nonallergic rhinitis in this series were characterized by ocular pruritus or burning, 28%; frontal headache, 22%; symptoms consistent with asthma, 33%; an unremarkable nasal mucosa, 96%; the absence of nasal polyps, 100%; nasal eosinophilia (greater than or equal to 5%), 10%; nasal neutrophilia (greater than or equal to 25%), 22%; numerous nasal bacteria, 12%; sinusitis, 6%; and a geometric mean IgE of 26.4 U/mL. This experience suggests that PNR is a common problem in a general allergy practice. Nasal obstruction, usually more difficult to treat than rhinorrhea, is the dominant symptom. Unexpected findings were frequent conjunctivitis and nasal neutrophilia.
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PMID:Perennial nonallergic rhinitis: a retrospective review. 248 Jul 28

The occupational hazards associated with exposure to 2 per cent glutaraldehyde have been assessed in medical and nursing staff working in an endoscopy unit. Eight of the nine staff were affected and the clinical manifestations included watering of eyes, rhinitis, dermatitis, respiratory difficulties, nausea and headache. The atmospheric concentrations of glutaraldehyde were assessed and the effect on clinical manifestations is discussed. Glutaraldehyde is an irritant and sensitiser. Guidelines for those exposed to the compound are discussed to prevent, monitor and manage any health hazard.
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PMID:Occupational hazard in hospital staff exposed to 2 per cent glutaraldehyde in an endoscopy unit. 252 52

With the aid of a questionnaire form we have gathered information about the clinical picture of patients suffering from primary ciliary dyskinesia. The study group numbered 34 persons, whose diagnosis was confirmed by electron microscopy. Chronic cough and common cold symptoms are present from shortly after birth. Twenty-three respondents reported respiratory tract problems in the neonatal period. The dysfunctional cilia result in chronic respiratory tract infections (chronic bronchitis; bronchiectasis; pneumonia; chronic sinusitis, rhinitis or otitis media). These lead to the following complaints: frequent blowing of the nose (in 32 pat.; 94%), chronic productive cough (in 28 pat.; 82%), chronic common cold (in 26 pat.; 77%), hearing problems (in 24 pat.; 71%), shortness of breath (in 23 pat.; 68%), frequent headache (in 13 pat.; 38%) and sore throat (in 9 pat.; 27%). In order to prevent the invalidating consequences of this disorder appropriate steps should be taken as soon as possible. These should include physiotherapy and adequate antibiotic therapy.
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PMID:[Primary ciliary dyskinesia; a questionnaire study of the clinical aspects]. 258 63

In this multicenter, double-blind, parallel study, the antihypertensive effects of betaxolol (20 mg once daily) and/or chlorthalidone (25 mg once daily) were analyzed in 186 patients with essential hypertension. Following a 2- to 4-week placebo baseline period, patients were randomized to one of two treatment groups (betaxolol or chlorthalidone) and studied for 6 weeks while receiving single therapy and an additional 6 weeks with a combination of the two agents. Significant decreases from baseline supine diastolic blood pressure (SDBP) were observed in both groups at the end of the single-therapy phase (11 mm Hg in SDBP for betaxolol and 12 mm Hg in SDBP for chlorthalidone); a further significant decrease (7 mm Hg for betaxolol and 8 mm Hg for chlorthalidone in SDBP) was observed from the end of the single-therapy phase to the end of the combination-therapy phase. Changes in supine systolic blood pressure (SSBP) from baseline to the end of the single-therapy phase were 10 mm Hg for the betaxolol and 16 mm Hg for the chlorthalidone group. In all cases, within-group changes were statistically significant. From the end of single therapy to end of combination therapy there was an additional 14-mm Hg and 13-mm Hg reduction in SSBP in the betaxolol and chlorthalidone groups, respectively. Overall, 89% of the randomized patients completed the single-treatment phase (phase I), and 89% of those patients completed the combined therapy phase (phase II). There was no significant difference between treatment groups in the clinical response rate (SDBP at or below 90 mm Hg or a decrease from baseline of at least 10 mm Hg). A substantial percentage of patients completing phase I responded to either single agent (58% for betaxolol and 65% for chlorthalidone). Among patients completing phase II therapy, the combination of the two agents produced a greater response rate (83% for the betaxolol-first group and 85% for the chlorthalidone-first group). In conclusion, both agents were effective and well tolerated. The most frequent adverse events in the single-therapy phase were headache, arthralgia, and dizziness, while bradycardia, rhinitis, arthralgia, and dizziness were most frequent in the combination-therapy phase. The combination of betaxolol (20 mg) and chlorthalidone (25 mg) once daily produced an additive antihypertensive effect regardless of which drug was administered first.
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PMID:Comparison of the antihypertensive effects of betaxolol and chlorthalidone as monotherapy and in combination. 268 73

Between August 1982 and December 1985, seven patients at a children's hospital developed hospital-acquired pneumonia caused by Legionella pneumophila. Demographic data included the following: mean age 12.3 years (range 9 months to 20.5 years); male/female ratio 5:2; all patients were white. Some previously identified risk factors present in our patients included high-dose corticosteroid therapy (five patients), other immunosuppressive therapy (four), and chronic lung (five) or kidney (three) disease. Symptoms and signs included rapid onset, fever, cough, pleuritic chest pain, dyspnea, abdominal pain, diarrhea, and headache. Rhinitis, myalgia, and neurologic abnormalities were not noted. Chest roentgenograms revealed single-lobe consolidation in three patients, diffuse bilateral alveolar infiltrates in three, and pleural effusion in three. All patients were treated with erythromycin; three patients also received rifampin. Tracheal intubation and mechanical ventilation were required by four patients. Six patients improved after therapy. One child died of persistent lung disease 1 month after the onset of legionnaires disease. L. pneumophila was isolated from potable water in the hospital. Aerosol equipment cleansed with tap water and the showers were implicated as means of exposure by patients to contaminated potable water. No new nosocomial cases were seen after immunocompromised children were prohibited from taking showers, and sterile water was used to cleanse equipment for administering aerosol medications.
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PMID:Nosocomial legionnaires disease in a children's hospital. 273 94

A cross sectional survey investigating "building sickness" was carried out in two buildings with similar populations of office workers but differing ventilation systems, one being fully air conditioned with humidification and the other naturally ventilated. The prevalence of symptoms related to work was assessed by a questionnaire administered by a doctor. A stratified, randomly selected sample of workers was seen (84% response). Building sickness includes several distinct syndromes related to work, most of which were significantly more common in the air conditioned building than the naturally ventilated building--namely, rhinitis (28% v 5%), nasal blockage and dry throat (35% v 9%), lethargy (36% v 13%), and headache (31% v 15%). The prevalence of work related asthma and humidifier fever was low and did not differ significantly between the two buildings. An environmental assessment of the offices was performed to attempt to identify possible factors responsible for the differences in the prevalence of disease. Globe temperature, dry bulb temperature, relative humidity, moisture content, air velocity, positive and negative ions, and carbon monoxide, ozone, and formaldehyde concentrations were all measured. None of these factors differed between the buildings, suggesting that building sickness is caused by other factors.
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PMID:Comparison of health problems related to work and environmental measurements in two office buildings with different ventilation systems. 392 99

Formaldehyde (F) elicits contact dermatitis and asthma in subjects who are exposed to this chemical when it is applied on the skin or inhaled. An immediate-type hypersensitivity reaction was never confirmed in these reactions. F is widely used in hemodialysis to sterilize adhesives, surgical devices, or reconditioned dialyzers. A 20-year-old woman who was subjected to hemodialysis for the past 4 years had a contact dermatitis to F. When hemodialysis was performed with a new dialyzer not sterilized with F, there were no symptoms. She had minor symptoms of anaphylaxis characterized by rhinitis, wheezing, and headache on the first use of a reconditioned dialyzer. Two days later, she was dialyzed with the same reconditioned dialyzer and developed within minutes a severe anaphylactic shock requiring resuscitation. The patient had no personal or family history of atopy. Prick tests and RAST to common food and inhlant allergens were negative. Prick tests performed with 0.1% and 1% F were positive in the patient, whereas they were negative in control subjects. RAST to F was performed with discs specially prepared and coated with human serum albumin. RAST was strongly positive. RAST to ethylene oxide was negative. A patch test with F was performed and induced an anaphylactic shock 26 hours after the skin application of F. The patient did not present any anaphylactic symptoms with the use of nonreconditioned dialyzers. An immediate-type allergy to F mediated by IgE may be envisaged in this patient.
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PMID:Anaphylactic shock caused by formaldehyde in a patient undergoing long-term hemodialysis. 395 88

Nimesulide, 4-nitro-2-phenoxymethanesulphonanilide, a new non-steroidal anti-inflammatory drug endowed with potent anti-inflammatory, analgesic and antipyretic activities, was tested at a daily dose of 200 mg b.i.d. against Benzydamine on a double-blind basis, in a randomized trial with fifty out-patients suffering from inflammatory ear, nose and throat diseases (otitis media, sinusitis, rhinitis). Nimesulide treatment brought about an immediate and significant improvement in over-all pain, exudation, oedema and headache and produced a rapid lowering in body temperature. The recovery was more rapid and significant in patients with Nimesulide than in those with Benzydamine. The signs and symptoms under consideration reached almost complete resolution within the set treatment-period of 10 days. Clinical tolerability of Nimesulide was better than that of Benzydamine: one case of moderate gastric pyrosis and drowsiness was complained of by the Nimesulide-treated patients versus eleven cases of gastro-intestinal discomfort, mouth dryness, and/or drowsiness which were complained of by the Benzydamine-treated patients.
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PMID:Nimesulide for the treatment of painful inflammatory process in the ear, nose and throat areas: a double-blind controlled study with benzydamine. 651 48


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