Can working out cause bruises? If not what causes a random, no impact bruise?

Question

Recently I got this nasty bruise on my arm and it it's been there for at least 3 days. I think it's actually gotten worse.

Answer 1

The answer to spontaneous bruising depends of a few different factors like, age, state of health and medications that your one. Bruising in a healthy adult needs to be assessed by a Dr., with a complete panel of blood work-to rule out any pathology.

Answer 2

Besides any meds you may be taking,   My dad has an enlarged spleen and this is why he bruises easily.  SOmetimes it can be internal bleeding .  It also has to due with damaged capillaries. Tears in blood vessel walls can cause easy brusing.  Thinnning skin and light skin of course show bruises easier.  Consult Dr. if Bruise last longer than 3 wks.