View clinical trials related to Urticaria.
Filter by:Background: - Mast cells are responsible for most symptoms of allergic reactions. In some allergic diseases, it is unusually easy to cause mast cells to release their contents and cause allergic reactions. In other cases, mast cells grow abnormally and, in rare cases, can result in tumors. Mast cells also control other parts of the immune system. - Understanding why mast cells behave abnormally in allergic diseases is important to finding better ways for diagnosing and treating these potentially life-threatening disorders. Objectives: - To screen mast cells at the genetic and functional levels to characterize abnormalities, identify mutations, detect carrier states, and/or develop therapies for such disorders. - To create a library of information about inherited diseases of mast cell homeostasis and activation, including piebaldism (problems with skin and hair pigmentation), anaphylaxis (severe allergic reaction), allergies, asthma, atopic dermatitis (eczema), allergic rhinitis ( hay fever ), food allergies, urticaria/angioedema (hives/swelling), immunodeficiency diseases, and autoimmune diseases. Eligibility: - Patients between the ages of 1 and 80 years who have been referred by a physician and are known to have or be suspected of having an inherited disorder of mast cells, in particular patients (and their relatives) with piebaldism, allergies, or anaphylaxis that is not caused by allergies. Design: - Study population will consist of up to 1000 participants in a 5-year period. One third of the study population will consist of patients; the other two thirds will consist of biological relatives. - Evaluation is limited to testing on blood specimens; no treatment will be provided. - Clinical and research laboratory evaluations of patients will include the following: - Clinical evaluation and previous laboratory tests as documented in outside medical records by health care providers. A standard questionnaire will also be administered at the time of subject enrollment. - Blood collection for clinical laboratory testing, tailored to each subject s clinical evaluation where appropriate (5 ml). - Blood collection for research laboratory testing, tailored to each subject s clinical evaluation including genetic screening and assessment of mast cell growth and functioning and storage of additional frozen blood specimens for future studies (up to an additional 30 ml). - Evaluations of blood relatives will include the following: - Clinical evaluation as documented from outside medical records by health care providers and administration of a standard questionnaire. - Blood collection where indicated for diagnostic or research purposes. - After 12 consecutive months on the study, results from initial evaluation will be reviewed. Subjects with findings deemed to be of continued interest will be contacted and invited to remain as active participants to this protocol for another year, provided that they renew their consent to participate.
This open-label study is being conducted to determine the effect of DL treatment for CIU on symptom and disease severity, quality of life, daytime functioning, and quality of sleep.
The purpose of this study was to determine the effect of desloratadine treatment on quality of life, daytime functioning, quality of sleep, symptoms, and disease severity in patients who had hives for 6 weeks or longer. Patients took desloratadine for 1 month. Once a week, patients filled out a questionnaire to tell how their hives affected their lives. This questionnaire is called the Dermatology Life Quality Index or DLQI. They also filled out a diary every day to tell how much itching they had, how many hives they had, and how their hives had affected their sleep or daily activities. The patients and doctors rated the patients' overall condition and how much relief patients got from treatment.
This double-blind pilot study was conducted to establish the best way of using desloratadine treatment to protect quality of life of chronic idiopathic urticaria (CIU) patients, after an initial 4-weeks of daily treatment: prolonging systematic daily treatment or as needed (PRN; in the case of symptoms).
The purpose of this study is to collect information on unexpected adverse reactions (ADRs), how often ADRs occur, and factors that can affect the safety and effectiveness of Claritin (loratadine) when used in children. Patients will be observed while they are taking Claritin, and ADRs and symptom scores will be recorded. At the end of treatment, improvement in symptoms will be recorded. Post-marketing surveys are not considered applicable clinical trials and thus the results of this survey will not be posted at its conclusion. The results will be submitted to public health officials as required by applicable national and international laws.
The purpose of this study is to observe the side effects of desloratadine syrup and how effective it is in relieving symptoms of allergic rhinitis or hives in Filipino children. The participants will take desloratadine syrup for 14 days. At the end of treatment, side effects will be recorded, as well as how the participants tolerate the medication. Effectiveness will also be rated at the end of treatment.
This study was conducted to evaluate the safety and tolerance of desloratadine after 5 weeks of repetitive dosing in children ages 2 to 12 years old with allergic hypersensitivity or chronic hives. All of the subjects enrolled in this trial were previously identified in an earlier trial to be poor metabolizers of desloratadine.
This was a randomized, double-blind, parallel-group, multicenter study that used both an active control (cetirizine) and a placebo control to evaluate desloratadine 5 mg once daily during a 28-day treatment period. The active treatments and placebo were allocated in a 2:2:1 ratio.
This was a randomized, double-blind, parallel-group, multicenter study that used both an active control (cetirizine) and a placebo control to evaluate desloratadine 5 mg once daily during a 28-day treatment period. The active treatments and placebo were allocated in a 2:2:1 ratio.
Increase prevalence of thyroid autoimmunity is found in patients with chronic urticaria. About 5-34% of chronic urticaria patients is associated with the presence of thyroid autoimmunity who are euthyroid status whereas 5-10% of them with either hyperthyroidism or hypothyroidism.