Lorraine,

Sounds like he could have a URI or kitty allergies. As fas as shedding is concerned, he's simply shedding his winter coat. My cat Mollie Rose was diagnosed with kitty asthma. She started sneezing again just recently and was put on Orbax and Interferon. The sneezing stopped within a week.

I'd take him to the vet just to rule out an upper respiratory infection. The last thing you need is for it to turn into pneumonia.

Good luck.