Don't worry...you are suffering from seborrheic dermatitis causing dandruff and hair fall... Medicine available for good control... Treatment depends on the severity..Do direct online consultation for detailed prescription by sending photos.

Headaches generally should have no correlation  with hairfall and dandruff.  In very rare cases we see what we call Scalp dysaesthesia where a painful scalp preceeds an excessive hairfall.  Treatment for both hairfall and dandruff is cause specific Hairfall could be due various nutritional deficiencies or specific medical conditions which will need to be evaluated and treated accordingly. In general  TSH, Sr Vit D3, Sr Vit B 12 levels can be done Dandruff  which is a term loosely used for a  flaky scalp again could be due to seborrheic dermatitis,  scalp psoriasis,  pityriasis sicca all of which require detailed history and examination to be appropriately diagnosed

Hairfall can be due to stress, hormonal changes, thyroid, lack of sleep and vitamin deficiencies.csb be treated effectively with medications.dandruff can also be treated effectively.consult me online for further treatment.

Since you have a chronic issue it's best to consult online The pain maybe due to various reasons. The dandruff maybe the reason for hairfall but it's best to be evaluated thoroughly. My suggestion 1. Use an anti dandruff shampoo atleast thrice a week 2. Leave on the shampoo for atleast 5 mins before washing it off 3. Use a paraben and sulphate free shampoo along with dandruff shampoo 4. Oil your hair once a week, an hour before hair wash. 5. Maintain a well balanced diet rich in iron, vit B12, vit d3.