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The rashes anywhere on the body can be due to several reason. The most common reason for rash is an allergic reaction
, next to it is fungal infection
and still other one is viral infection. The type of rash you have developed in exposure to sun seems most likely to be due to an allergic reaction. Another feature of allergic rash
is that it will more that one and often spreads spontaneously and simultaneously.
The hydrocortisone cream
is no doubt very effective in allergic reaction but not fully effective alone until used along with antihistamines. Therefore it is recommended to get antiallergic tablets orally and hydrocortisone cream topically for best results.