Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0024530 (malaria)
 44,886 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Rash is not generally believed to be a symptom of malaria. Two cases of acute falciparum malaria in non-immune residents of Mozambique who presented with pruritic rashes are reported. One case exhibited classical urticaria, the other a pruritic papular rash. Review of the literature reveals cases of malaria from India, East Africa, France, and the USA presenting with urticaria or a pruritic rash. Previous exposure to malaria may be a factor in these presentations. Physicians should not discount the diagnosis of malaria in patients with a history of exposure if they present with a rash. This may be of particular importance in travellers returned from malarious areas to developed countries.
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PMID:Falciparum malaria presenting with pruritic rashes. 1729 80

Malaria is an infectious disease caused by protozoa of the genus Plasmodium. Cutaneous lesions in malaria are rarely reported and include urticaria, angioedema, petechiae, purpura, and disseminated intravascular coagulation (DIC). Here, five malaria cases associated with cutaneous lesions have been described. Out of the five cases of malaria, two were associated with urticaria and angioedema, one case was associated with urticaria, and other two were associated with reticulated blotchy erythema with petechiae. Most of the cutaneous lesions in malaria were nonspecific and reflected the different immunopathological mechanism in malarial infection.
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PMID:Cutaneous findings in five cases of malaria. 2122 Sep 1

Cutaneous manifestations are uncommon with malaria. These include urticaria, purpura fulminans, and petechial rash. We report on a series of three patients from a single family who had an urticarial rash with fever that was subsequently diagnosed to be caused by malaria. Urticarial rash has been previously reported with both falciparum and vivax malaria infections. Although the exact pathogenesis is not clear urticarial rash might be related with IgE mediated mast cell degranulation.
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PMID:Febrile urticaria in a family: uncommon manifestation of a common disease. 2327 45

Variable atypical symptoms are commonly observed in malaria caused by Plasmodium falciparum especially in endemic tropical nations such as India. Nystagmus is observed following involvement of the cerebellum especially during the postrecovery phase. While psychotic features such as severe agitation, hallucination, paranoia may be the early symptoms of falciparum malaria among pediatric patients, urticaria with or without fever can be the initial manifestation of the disease. As the morbidity and mortality of severe malaria are very high in India, these atypical presentations should be considered during diagnosis. We believe our report on atypical cases of falciparum malaria will sensitize doctors and health personnel about rare presentations in children and help in early diagnosis and management to reduce the severity and death toll due to the disease.
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PMID:Case reports on atypical presentation of Plasmodium falciparum malaria in pediatric patients. 2628 45

Climate change contributes to the increase in severity and frequency of flooding, which is the most frequent and deadly disaster worldwide. Flood-related damage can be very severe and include health effects. Among those health impacts, dermatological diseases are one of the most frequently encountered. Both infectious and noninfectious dermatological conditions are increasing after flooding. We searched PubMed using the search term climate change OR global warming OR rainfall OR flooding OR skin. Articles published in the English-language literature were included. We also searched the International Society of Dermatology website library on climate change for additional articles. There is an increased risk of trauma during the course of a natural disaster. The majority of post-tsunami wound infections were polymicrobial, but gram-negative bacteria were the leading causes. Infectious diseases with dermatological manifestations, such as impetigo, leptospirosis, measles, dengue fever, tinea corporis, malaria, and leishmaniasis, are important causes of morbidity among flood-afflicted individuals. Insect bites and stings, and parasite infestations such as scabies and cutaneous larva migrans are also frequently observed. Inflammatory conditions including irritant contact dermatitis are among the leading dermatological conditions. Dermatological conditions such as alopecia areata, vitiligo, psoriasis, and urticaria can be induced or exacerbated by psychological conditions post disaster. Prevention is essential in the management of skin diseases because of flooding. Avoiding exposure to contaminated environments, wearing protective devices, rapid provision of clean water and sanitation facilities, prompt vector controls, and education about disease risk and prevention are important.
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PMID:Impact of climate change on dermatological conditions related to flooding: update from the International Society of Dermatology Climate Change Committee. 2937 78

The origins of the major classes of current anti-emetics are examined. Serendipity is a recurrent theme in discovery of their anti-emetic properties and repurposing from one indication to another is a continuing trend. Notably, the discoveries have occurred against a background of company mergers and changing anti-emetic requirements. Major drug classes include: (i) Muscarinic receptor antagonists-originated from historical accounts of plant extracts containing atropine and hyoscine with development stimulated by the need to prevent sea-sickness among soldiers during beach landings; (ii) Histamine receptor antagonists-searching for replacements for the anti-malaria drug quinine, in short supply because of wartime shipping blockade, facilitated the discovery of histamine (H1) antagonists (e.g., dimenhydrinate), followed by serendipitous discovery of anti-emetic activity against motion sickness in a patient undergoing treatment for urticaria; (iii) Phenothiazines and dopamine receptor antagonists-investigations of their pharmacology as "sedatives" (e.g., chlorpromazine) implicated dopamine receptors in emesis, leading to development of selective dopamine (D2) receptor antagonists (e.g., domperidone with poor ability to penetrate the blood-brain barrier) as anti-emetics in chemotherapy and surgery; (iv) Metoclopramide and selective 5-hydroxytryptamine3(5-HT3) receptor antagonists-metoclopramide was initially assumed to act only via D2 receptor antagonism but subsequently its gastric motility stimulant effect (proposed to contribute to the anti-emetic action) was shown to be due to 5-hydroxytryptamine4 receptor agonism. Pre-clinical studies showed that anti-emetic efficacy against the newly-introduced, highly emetic, chemotherapeutic agent cisplatin was due to antagonism at 5-HT3 receptors. The latter led to identification of selective 5-HT3 receptor antagonists (e.g., granisetron), a major breakthrough in treatment of chemotherapy-induced emesis; (v) Neurokinin1receptor antagonists-antagonists of the actions of substance P were developed as analgesics but pre-clinical studies identified broad-spectrum anti-emetic effects; clinical studies showed particular efficacy in the delayed phase of chemotherapy-induced emesis. Finally, the repurposing of different drugs for treatment of nausea and vomiting is examined, particularly during palliative care, and also the challenges in identifying novel anti-emetic drugs, particularly for treatment of nausea as compared to vomiting. We consider the lessons from the past for the future and ask why there has not been a major breakthrough in the last 20 years.
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PMID:A History of Drug Discovery for Treatment of Nausea and Vomiting and the Implications for Future Research. 3023 61

Malaria an endemic disease of India caused by plasmodium species. Chloroquine, a member of quinolone group of drugs is used to treat malaria. Although it has a very safety profile as it is used during pregnancy, many adverse effects have also been reported. Here we report a case of 30-year-old male admitted with fever diagnosed to be having malaria, who developed urticaria immediately after being treated with first dose of chloroquine which was treated successfully. This is the first case reported ever in an adult having chloroquine induced urticaria.
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PMID:Chloroquine induced urticaria: A newer adverse effect. 3146 94


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