It sounds challenging to have persistent leg muscle pain for such a long time, especially when it worsens with activity and changes location after using a pain-relieving gel. This pattern may suggest underlying issues such as muscle strain, nerve irritation, or circulation problems, possibly aggravated by walking without proper footwear.

Possible causes include:

• Chronic muscle strain or overuse, especially if the pain worsens with walking or strain.
• Nerve-related pain, which can shift location and respond variably to topical treatments.
• Circulatory issues or vitamin deficiencies affecting muscle health, given the long duration.

Recommended steps:

• Consult a neurologist or orthopedist for a thorough evaluation, including physical examination and possibly imaging or nerve studies.
• Consider blood tests to check for vitamin D or B12 deficiencies, as supplements like ME D3 Tablet (containing vitamin D3, mecobalamin, and other nutrients) may help if deficiencies contribute to symptoms.
• Use supportive footwear consistently to reduce strain on your legs.
• Physical therapy might help strengthen muscles and improve function.

If the pain worsens suddenly, is accompanied by swelling, redness, numbness, or weakness, seek urgent medical attention. Otherwise, a specialist can guide you toward targeted treatment based on a detailed assessment. If you want, I can explain more about how vitamin deficiencies affect muscle pain.To narrow down potential causes, we will need some more information.I understand you've been experiencing leg muscle pain that shifts after using a pain-relieving gel, mainly in your thigh and calf, for about ten years. It gets worse with strain or walking without slippers. To help me understand your situation better, could you please provide your age and gender?