Brief Answer:
Cholinergic urticaria
Detailed Answer:
Hi. Thanks for posting your concern at XXXXXXX
I would keep a possibility of Cholinergic Urticaria. It happens in response to changes in core body temperature like after a hot shower, in response to strong emotions, exercise, spicy food etc.
This type of urticaria is not usually associated/related with any food allergies however patients who are more severely affected may experience systemic symptoms such as
headaches, salivation, palpitations, fainting,
shortness of breath, wheezing, abdominal cramps and diarrhoea.
Urticaria OR hives can occur due to various causes like(to name a few):
-Infections(bacterial , viral, fungal)
-Drugs (prescription as well as non-prescription drugs)
-Certain foods and food additives/preservatives
Physical Urticaria: Cold temperature, Heat, Pressure(Prolonged Standing, Sitting), Dermaographism etc.
-Cholinergic Urticaria: in response to strong emotions, exercise, spicy food etc
-
Autoimmune disorders like SLE, RA etc.
-A few cases have no underlying cause and are known as idiopathic urticaria.
I would advice you to get few basic lab tests like Hemogram, stool for ova/cyst, Urine routine, Chest Xray.
An oral antihistamine like
Fexofenadine OR
Loratadine once or twice daily for a week would be suitable. They are non-sedating and wont affect your alertness level.
A topical soothing lotion like calamine would help you symptomatically.
take care
regards