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How can you tell if a cut or something is infected?

I have a weird cut on my knuckle that looks very weird.

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Usually an infected cut will be very red around the cut it may hurt or feel hot or be swollen, also any yellow or greenish tint, if there are red lines running from the injury up your hand this could be sign of blood poisoning (an infection that has enter the blood stream) In the case of red lines you need to see a Dr immediately, otherwise wash it really well and put and antibiotic ointment on it 2-3x day, if it isn't better in 2-3 days or the redness or swelling increases seek medical attn

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scary non of that happened great it just looks weird then :P
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in other words if its really infected it will turn black and or purple and when you touch it it will hurt like hell
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i had to get surgery a few days ago because my toe was black and purple around the toenail... ewwwwwwwwww!
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o.o
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You ask someone if it looks infected

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You'll just know.

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It usually will be red, tender, warm/ hot around the area and have a yellow drainage. Seek medical advice for above or if it doesn't get better in a few days. There are lots of nasty germs out there! Also depends on how you got the injury. Was it cut by an old rusty metal or an unknown object in the dirt? May need a tetanus shot...

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Look up pictures on the internet. If you see similarities then you most likely have an infection.

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What do you do when your best friend dating your crush?

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You talk to me duh
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it will become red around the wound.

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if its res and swollen

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well... it will be sensitive to the touch and will be red and on some or most occasions filled with puss.

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Go to the doctor thats how u know

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What plants use sunlight to create their own food?

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it's color

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normally you can not tell but the only way to know quickly is not that easy and is a little bit complicted that is by using a microscope because our naked eyes dont have exraordinary pupils to view sunlight rays on the infected object for the brain to see but if it is an object put it in a sterilizer nd the you ind the spot coming RED

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you would be able to tell if it is infected if it is red around the cut or the scab will be a yellowish

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You can go to seek doctor if looks serious

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A resolving wound will scab over and dry up and the scab will eventually fall or slough off. If your wound has not dried and scabbed over YOU MOST LIKELY have an infected wound. Seek medical attention; at the very least, wash thoroughly with an an antiseptic and then keep the wound moist with a barrier of antiseptic ointment and a bandage. Clean the wound twice daily, reapplying the antiseptic and a clean bandage each time. Nature's best way to debride a wound is honey. Google it!

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swelling and an irritable sensation !

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