Thanks for posting your query.
Mouth ulcers,itchy eyes,rashes on hand and genital sores suggest your are having Herpes Simplex
Virus infection. It can infect both genital area and upper body simultaneously. It can spread through physical or sexual contacts. So avoid to transfer your infection to others. You should take rest and take plenty of water. Currently there is no medication for this virus and it goes away after few days, however acyclovir/famciclovir
can help you.
For further investigation contact your doctor.
Hope it helps.