Itchy implies fungus = which means you have fungal acne. Have you taken antibiotics recently ? Fungal acne is caused by taking antibiotics and some other meds.

Do you also have dandruff or a white tongue ?

If you get back to me with answers to the questions above and below, I can provide information that will safely and cheaply control your problem.

PS> Were you bitten by ticks or mosquitoes when you were camping ?