### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
I am a 43 year old female. I weigh 170 and I m 5 5 . I am a healthy person who exercises regularly. I had a knot come up on my lower leg which is fluid filled with localized swelling of the tissue. Not really painful. Slightly bruised. It;s been there for approx. 4-6 weeks. For the past 3 days, my ankle has been swelling and seems to be getting worse. What do you think is causing the ankle swelling? I assume its related to this knot...infection maybe??

### output:

Here you have explained about a knot at your leg level from past 3 weeks, and it has become bruised. Along with this there is a complaint of ankle pain and swelling from past 3 days. But you have not informed where exactly the knot is present at ankle level or above ankle level its question. Now let me tell you if this knot is increasing in size and changing in color then you need to visit your doctor for proper check up and treatment, and you may need to go for excision surgery along with biopsy of the same for conformation of what it is. And after this if your ankle swelling is also over then good but if not then use crew bandage and keep doing ankle toe movements and do not strain your ankle with weight-bearing. You will be suggested for certain medication also to reduce infection if it is. So Don't worry and follow the treatment program as per your doctor advice. Now if this knot is not increasing in size and it's just a normal fluid sack then I suggest to use ice pack and hot pack frequently in daytime on it. This will help to reduce it on its own. And keep taking precautionary care for ankle to reduce swelling and pain with use of crew bandage and elevating leg along with needed anti-biotic and painkiller tablets. I am sure this will be helpful if you follow it properly step by step. Take care.