Lump at injection site: Hi, I did my... - Pernicious Anaemi...

Pernicious Anaemia Society

32,623 members23,985 posts

Lump at injection site

Curlygal profile image
13 Replies

Hi,

I did my injection in my thigh as usual today, unfortunately I hit a vein and a little blood came out. There's a small lump at the injection site, should I be worried? It hasn't happened before. I know I'm probably just being silly! 🤔

Written by
Curlygal profile image
Curlygal
To view profiles and participate in discussions please or .
13 Replies
Foggyme profile image
FoggymeAdministrator

Nothing to worry about Curlygirl. You will have nicked a small vein near the surface of the skin and the lump is a little bruising under the skin, caused by a small bleed. It happens sometimes. The lump will disappear as the bruise resolves...as bruises do.

If it happens again, just use a clean tissue and apply pressure over the site of the bleed, until it stops (usually stops quite quickly).

Phew...relief 🙂

Curlygal profile image
Curlygal in reply toFoggyme

Thanks Foggyme ...I have hit a vein before and had a bruise, but never a lump! I did apply pressure, and it did stop quickly, just wondering why a lump this time? I'm feeling a little hypochondriacy right now (pandemic, my mother is having chemo, stress....) Also it's jolly sore! Aargh 😕

Foggyme profile image
FoggymeAdministrator in reply toCurlygal

Curlygirl...it may be that the injection didn't go far enough into the muscle and that some B12 back-tracked into the subcutaneous tissue and hence could be felt (or perhaps seen) as a lump under the skin. Again, nothing to worry about. You'll still get the full dose of B12 and the lump should subside as the B12 is absorbed into the body.

Some inject subcutaneously so it's worth noting that when this is not done deep enough (i.e. into the transdermal layer just under the skin), then a lump and red staining can appear (because the injectable B12 is bright red). Again nothing to worry about.

In the unlikely event that the lump becomes more swollen, more painful, or new red inflammation appears around the injection site, then best to get it checked by your practice nurse or GP to ensure that there's no infection (very unlikely and would appear over time, not immediately after injection).

Any discomfort is likely due to pressure from expansion in the tissues and should subside as the lump does,

So sorry to hear about your mum - hope all goes well for her.

And yes...these are very strange times, aren't they 🤨 🙂x

Curlygal profile image
Curlygal in reply toFoggyme

Thank you ❤️. It's not sore any more, there's still a wee lump and a developing bruise. But I'm not worried now.

Foggyme profile image
FoggymeAdministrator in reply toCurlygal

Good to hear Curlygal. Thank you for the update 🙂x

wedgewood profile image
wedgewood

Just putting in my peneth ( spelling?) of reassurance . Yes , it happens , but don’t worry . This pandemic situation is taking its toll on our mental health there is no doubt . It’s no wonder that many things are bothering us . Hope that Foggyme’s words have reassured you . Best wishes .

Curlygal profile image
Curlygal in reply towedgewood

Yes, I think we're all on edge anyway, it's a weird and scary time.

deniseinmilden profile image
deniseinmilden

I can't see any reason for it to be a problem and if you are feeling more sensitive than usual then I trust your judgement - you would have already done more about it if you knew it was a problem!

Biggest thing is to be extra positive about your next jab. If you are feeling wobbly then your jabs are more important than ever.

Sending you lots of sympathy and all the best for your Mum's recovery. x

Curlygal profile image
Curlygal in reply todeniseinmilden

Thank you for your kindness. My mum has stage 3 breast cancer, I can't visit until she finishes the chemo because of the infection risk.

Yes, I knew it was probably nothing, the lump, but you know what it's like when you're stressed. Every little thing is noticed more acutely.

deniseinmilden profile image
deniseinmilden in reply toCurlygal

I know and understand!

I trust your judgement! x

Bonjourtristesse profile image
Bonjourtristesse

I’m not sure if you’re injecting sub cutaneously or IM. When I do subcutaneous the ‘lump’ is the b12 liquid and it gradually disperse over maybe a day as it’s absorbed into the body.

Curlygal profile image
Curlygal in reply toBonjourtristesse

It's IM. I don't know what happened this time!

Bonjourtristesse profile image
Bonjourtristesse in reply toCurlygal

I think the bruise is a bit lumpy also. As the bruise heals the lump goes.

Not what you're looking for?

You may also like...

Alternating injection site…

Hi all 😊 Just need a little advice. I’ve been self administrating (IM) b12 for around a year...
SallyRees profile image

Injection Site Rotation

A few years after a diagnosis for pernicious anaemia, I am still unwell. I‘m light headed, the fog...

Bleeding at injection site

Good morning, I’ve just done my SI B12, I’ve done about 6 now and this morning it bleed quite a lot...

Injection site pain/No improvement yet

Hi everyone I’m on my second injection after loading doses and have been alternating location and...
Ashley8 profile image

Red mark around B12 injection site ?

Hi The red marks have just started to appear but not after every injection. I have been self...
Divine1990 profile image

Moderation team

See all
Gambit62 profile image
Gambit62Administrator
Foggyme profile image
FoggymeAdministrator
taka profile image
takaAdministrator

Content on HealthUnlocked does not replace the relationship between you and doctors or other healthcare professionals nor the advice you receive from them.

Never delay seeking advice or dialling emergency services because of something that you have read on HealthUnlocked.