Headaches can have a variety of reasons including stress, tension, dehydration, eye strain, or sinus issues. The symptoms you mentioned can sometimes be related with more serious conditions, like migraine, nerve damage, or blood circulation issues, and a healthcare professional can conduct a physical examination, review her medical history, and perform necessary diagnostic tests to help determine the cause of her symptoms.

Hard stools are a common symptom of constipation. Constipation causes if your diet intake is not proper, eat high fibre foods and plenty of water. If you are experiencing persistent constipation or difficult to pass stools, its recommended to consult with a gastroenterologist for proper diagnosis and treatment.

If you are specifically interested in stem cell therapy for hearing loss, you can ask your ENT specialist if they have experience with or can refer you to a specialist who is conducting clinical trials or treating patients with stem cell therapy for hearing loss.

This can be symptoms of anal fissure, hemorrhoids, inflammatory bowel disease, or infections.. like proctitis. Consult a gastroenterologist, who can examine you, and take a detailed medical history, to perform necessary tests to diagnose the reason.

A red sore can occur due to infections, skin conditions, or sexually transmitted infections (STIs), Its difficult to determine without proper examination so i suggest you consult a urologist and get proper treatment after evaluation.

It's possible that the wound from your radiotherapy treatment has not fully healed or that there may be other factors contributing to your symptoms. You should communicate openly with your doctor about your symptoms, concerns, and treatment history, as they will have the best understanding of your problems. 

After an illness, it is normal for our bodies and minds to undergo certain changes as part of the healing process. If you are feeling distressed and unable to sleep consult your doctor and get medications to get well soon.

If you are experiencing pimples on your penis, it is advisable to consult with a urologist or dermatologist, for an accurate diagnosis and appropriate treatment. They can provide personalized advice based on your specific situation.

To help with your frequent indigestion/constipation its important to consult with a gastroenterologist for a proper evaluation and personalized advice. Apart from the treatment you can improve your diet, have more fibre rich foods, stay hydrated, do exercises as it stimulates your bowel movements.

Irregularities in menstrual cycles are common especially during adolescence when hormonal changes are occurring. Also many reasons contribute to missed periods in young girls, it can be stress, changes in weight or exercise patterns, hormonal imbalances, PCOS, thyroid disorders, and certain medications. 

Premature ejaculation is a common concern among many individuals. While medications may be helpful for some people, they may not work for everyone. Consulting a urologist or a sexual health specialist, would be beneficial.

If you have lost immunity to hepatitis B, it means that your body is no longer protected against the hepatitis B virus. Immunity to HBV is typically acquired through vaccination or prior infection.

It sounds like he experienced a severe head injury at a young age, resulting in significant impairments. Given the complexity of your brother's situation, it would be best to seek the expertise of specialists such as pediatric neurologists or neurosurgeons, 

If you're facing severe headache or migraine for more than a week, along with body pain and fever then consult a neurologist as there can be some reason that the doctor can evaluate.