Itchy tiny red rashes dispersed all over

Tiny red rashes specially.hands and legs ... it's very itchy. It's been a month since this started. First appeared in both the hands It is not having any pattern ...red dots sprinkled all over ...itches more at night. When these rashes dry it causes itchiness too...the dryness looks like generic skin dryness lil more prominent. The temperature here at my place is  harsh...so it's also adding to itchiness. Sometimes it looks like prickly heat rash, but slightly bigger than more common one and more dispersed. It is itchy and prickly feel. It is also in the fingers...but not on foot .. I have consulted twice here and both have different diagnosis one said allergic contact dermatitis and other said tinea corpis. so confused now.. Attaching the picture ...kindly let me know if anyone can identify best possible diagnosis No other medical condition but I stress alot.