07
Mar
How Long Can Allergic Reaction Symptoms Last. The most common allergens include. Whatever be the case the reaction remains for as short as two hours and could extend for days together. In rare occasions it may continue for up to 9 to 10 weeks. It must be mentioned here that if the reaction lasts for more than a day or two and does not reduce in intensity or only worsen with time you should not wait or delay and see the doctor at once.
And it does not matter how you consume it. Overall the rash should subside within a day or two. Most commonly a majority of people will have clear skin after about one to three weeks but a rash can last for over six weeks in more severe cases. Once an allergen is in your body an allergic reaction may begin within seconds or minutes. A very severe allergy can trigger anaphylaxis which is a severe life-threatening reaction that involves multiple body systems. Most of the time symptoms will appear between 1-2 hours after taking the drug unless you have a more rare delayed type reaction.
Signs and symptoms of a serious drug allergy often occur within an hour after taking a drug.
The time varies from person to person. Tingling or itching in the mouth. The most common symptoms are runny nose hay fever but these allergic reactions are manageable to a great extent. Food allergy symptoms usually develop within a few minutes to two hours after eating the offending food. You usually dont get a reaction right away. Most commonly a majority of people will have clear skin after about one to three weeks but a rash can last for over six weeks in more severe cases.