Causes for red patches could be numerous. But if associated with itching and they come and go frequently could be urticaria
. Especially if you have frequent runny nose, asthma this is a manifestation of allergic skin disease. You could be allergic to certain food, pollen, creams, soap, detergents, clothes as well. Scaly and dry skin
can be associated with allergic skin disease as well.
Kindly wear only cotton clothes, use non-allergenic shampoo, soap and detergent. Avoid peanuts or shellfish. Eat plenty of fresh fruits and green leafy vegetables. Drink plenty of water.
You can apply Dermaveen moisturizer which is a non-allergenic moisturizer. Also an anti-histamine
tablet like Cetrizine
can be taken at night before sleeping. These will give relief for the symptoms.
Avoid exposure to sunlight, excessive heat or cold conditions as well.
Do consult a Dermatologist
for appropriate diagnosis and treatment.
I hope I have answered your query.