In long standing Type 1 diabetes, it is common for blood sugar levels to become difficult to control over time, even when insulin is taken regularly. This is sometimes referred to as brittle diabetes (unstable diabetes), and it usually needs a detailed medical assessment rather than simple dose changes at home. Your current regimen of Actrapid and Insulatard may sometimes lead to high and low swings in sugar levels because these are older insulin types. Many patients achieve greater stability with newer treatment plans that combine long-acting insulin, such as glargine, detemir, or degludec, with rapid-acting insulin taken before meals. In selected cases, an insulin pump or continuous glucose monitoring can also help improve control. However, any change must be carefully planned by your doctor after reviewing your diet, kidney health, and recent HbA1c reports. Your body pain may be related to diabetic nerve damage or vitamin deficiencies, and should be checked accordingly. It is important not to change insulin on your own and to seek specialist guidance for safe adjustment.