How long does hematoma lump last?
The swelling and pain of the hematoma will go away. This takes from 1 to 4 weeks, depending on the size of the hematoma. The skin over the hematoma may turn bluish then brown and yellow as the blood is dissolved and absorbed. Usually, this only takes a couple of weeks but can last months.
What does it mean to have a lump under your arm?

Lump or bulge, Pain or discomfort, Tenderness to touch (Shoulder) and Tenderness to touch (Upper arm (bicep)) Lipomas are a harmless collection of fatty cells that form a round or oval, rubbery lump under the skin.
What to do if you have a bruise on your upper arm?
Most bruises caused by trauma, as long as it’s minor, can be treated at home. The RICE (Rest, ice, compress, elevate) method can be used to help heal a bruised upper arm. Even though these strategies may resolve the bruise, the underlying cause may not be completely addressed in every case.
What causes a purple bruise on the upper arm?
A bruised upper arm can be painful, restrict your range of motion, and may often appear as a purple or yellow bruise on the upper arm. Bruising on the upper arm can be cause by trauma from an injury to the bicep or tricep. Read on for more information on causes and how to reduce bruising.

What causes a bruise or lump under the skin?
That causes blood to leak into the tissue under your skin, creating a bruise or, medically speaking, a contusion. Older adults and women tend to bruise easier than men or younger people. Other types of bruises and blood spots under the skin are: Hematoma: After an injury, blood pools under the skin, forming a lump.
What does it mean when you have a lump in your arm?
Bruising or discoloration, Lump or bulge, Pain or discomfort and Unable to move arm. A hematoma is a collection of blood in the tissue outside of a damaged blood vessel, usually after an injury.
How to know if you have a bruise on your upper arm?
An upper arm bruise is often related to trauma or injury, and you may experience other symptoms such as: 1 Pain 2 Swelling 3 Feeling of shoulder instability 4 Warmth or redness of the shoulder area 5 Limited range of motion 6 Decreased strength 7 Bruising in other parts of the body 8 Frequent, large bruising
That causes blood to leak into the tissue under your skin, creating a bruise or, medically speaking, a contusion. Older adults and women tend to bruise easier than men or younger people. Other types of bruises and blood spots under the skin are: Hematoma: After an injury, blood pools under the skin, forming a lump.
What kind of bruises do older people get?
Older adults and women tend to bruise easier than men or younger people. Other types of bruises and blood spots under the skin are: Hematoma: After an injury, blood pools under the skin, forming a lump. These heal on their own without the need for treatment. Purpura: These are severe bruises that appear without an injury.