1 doctor weighed in:
Small red line coming from a sore on left arm. Is it time to worry?
1 doctor weighed in

In brief: Perhaps
The red line is just inflammation/infection following the lymphatics.
Lymphatics are channels carrying "foreign" material towards a lymph node, which is a sieve in the body. It filters out "foreign" material. So, this just means that your immune system is function. Worry only if you have a fever, chills, sweating, pain, marked tenderness or redness over the area.

In brief: Perhaps
The red line is just inflammation/infection following the lymphatics.
Lymphatics are channels carrying "foreign" material towards a lymph node, which is a sieve in the body. It filters out "foreign" material. So, this just means that your immune system is function. Worry only if you have a fever, chills, sweating, pain, marked tenderness or redness over the area.
Dr. Lester Thompson
Dr. Lester Thompson
Thank
Get help from a real doctor now
Dr. Christopher Crosby
Board Certified, Dermatology
12 years in practice
93K people helped
Continue
108,000 doctors available
Read more answers from doctors