Unfortunately, we cannot see your thumb so no definite answer is possible. Possibilities include trauma, recent pressure on the skin, skin abnormalities such as scleroderma, underlying bone/muscles/tendon abnormalities causing a crease and not a dent, subcutaneous fat atrophy, etc. Do not worry, but instead see your general doctor.
Answered 9/25/2023
0 views
A doctor has provided 1 answer
3 doctors weighed in across 2 answers
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question