My Boyfriend Has A Wound On His Back Neck. It's

My boyfriend has a wound on his back neck. It's like an eczema. He was in the hospital for 2days. He's studying so much & because of that he was so stressed. So he came back home in 3rd of July. But now he's suffering from headache & that wound. He's having medicine too & he doubts it's because of that. He's 20 years old.