Is this a tumor? (skin disease above eye and neck)

A few weeks back, my one year old cat began throwing up everything he ate. This went on for about two days, after which he began eating normally. A week after that, I noticed dried blood and a scab near his head, which I removed. There was a large amount of pus underneath it. I cleaned it daily for a couple of days, but today I noticed this where the scab was before. 


Along with that, I saw him scratching his neck and licking/grooming that area frequently today. This is what I saw when I looked closer: 


It's the raised area of his skin that's black in color, right underneath my thumb; it was also bleeding. I'm not really sure what it is since I haven't had cats before. Do I need to take him to the vet? How serious is this? Thanks in advance. 

I forgot to mention that my cat does go out frequently. He doesn't seem so want to go out much for the past few days though.

probably got in a fight. i would take him to the vet. is he fixed?

He isn't fixed :-/ I'd have to discuss it with my parents. Why exactly are you asking if you don't mind ?

Maochi said:

 
He isn't fixed :-/ I'd have to discuss it with my parents. Why exactly are you asking if you don't mind ?

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i don't mind any questions. if he's not fixed, he will go out in search of a mate and fight other males to do that. 

Unaltered males are far more likely to get into fights, and abscesses are very common as a result. There is also some pretty nasty bacteria, as well as FIV that can be transmitted through deep bite wounds as a result of fighting over territory or females. He's mature enough that other males smell him and treat him as a threat, and he's also probably getting unfixed female cats pregnant left and right. I would have him seen by a vet and discuss neutering ASAP. Even if he wanted to go outside, I would at least keep him inside until he's recovered and neutered.

It's clear these areas are bothering him, and anything that is open or bleeding, I would get him to a vet sooner as opposed to later. Especially if there is pus present there's an infection of some sort. It's good to keep it clean, but there is only so much we can do as owners and externally. His body may need help getting him back into good health and getting those patches healed up, and a vet can help with that in more ways than we can at home. The sooner you can get him to a vet and get it all treated, it's much more likely there will be a better and more inexpensive outcome. Waiting it out can allow things to get worse if he can't heal on his own, especially if he is still allowed to go outside.

I see..I'll find out where I can get him neutered but in the meantime, I'll just keep him indoors. Thanks for your help!!

 He does appear to be bothered by them, when I touch him, he flinches and tries to run away. I'm making an appointment for the vet, and try and get him neutered, hopefully my mum won't be opposed to it.

Great to hear - the vet may want to wait until those spots are healed up before neutering but you can discuss it further at the appointment. Please let us know how it goes!

Also, there is a ton of information online and at vet's offices and such that discuss the benefits of spaying and neutering our cats - this site is also a pro spay/neuter site. We have a few articles on it too, and some info to prepare you for what to expect and what to know regarding the process. You can always feel free to make a list of questions to bring to the vet to ask. Always make a list - it's very easy to forget questions here and there when you and the vet are busy looking at your cat's current condition:

Spay and Neuter Your Cats

Spaying and Neutering - What to Ask Before the Surgery

Spaying and Neutering - What to Look for After Surgery

When to spay/neuter a cat

Will do!! Thanks for all your help!! 

Maochi said:

 
Will do!! Thanks for all your help!! 

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You will also be saving lots of future kitten's lives by getting him neutered, he won't be impregnating females, who then have litters and many of those kittens die.  Also, his urine will smell normal after being neutered (in a few weeks) as unneutered male cat urine smells horrible.