Does balanitis cause red foreskin and wet penis head? and itch does it itch? how would it be treated?

Yes, yes and yes -- all three are typical symptoms of balanitis in uncircumcised men. Improved hygiene alone might be sufficient -- retract foreskin and wash with soap and water a couple times a day. Otherwise different cases may require different treatments, depending on the exact cause. Best to see a doctor, ideally a urologist or dermatologist. Good luck.

Yes it can cause those symptoms. Treatment depends on the cause and findings. The diagnosis is best left best to a doc/ Urologist and also the treatment- depending on findings.