One of the possibilities for your symptoms is of pityriasis rosea. Pityriasis rosea is a common human skin
disease which presents as numerous patches of pink or red oval rash
. The rash may be accompanied by low-grade headache, fever, nausea and fatigue and itching. No treatment is usually required. In most patients, the condition lasts only a matter of weeks or months(upto six months)
Topical and oral steroids are needed in severe cases.