First check your blood sugar level and take good hygiene condition.

Consult personally for better management

Prediabetic is status where max loss happens so plz consult in person

Check your sugar level and take precautions.

Consult ayurveda physician for proper diagnosis and root cause of ailments before consuming any medicine

Consult here

Ayurveda treats this conditions properly but do consult personally to know your problem in detail and to identify the exact problem from which your  treatment will be proper.

Redness, swelling of the tip of the penis, dryness, and itching around the foreskin or glans are commonly seen in conditions such as balanitis (inflammation of the glans penis) or balanoposthitis (inflammation of the glans and foreskin). These symptoms can occur due to fungal overgrowth, local irritation, poor genital hygiene, excessive moisture, friction, allergic reactions to soaps or personal care products, or elevated blood sugar levels. Since you mention having pre-diabetes, even mildly elevated blood sugar levels can sometimes make a person more prone to recurrent genital irritation and fungal infections. The symptoms you describe do not immediately suggest a serious disease, but they do warrant proper examination to identify the exact cause.

It looks like you have balanitis go for HBA1C blood sugar test you can apply kailas jeevan cream on the affected area use plain water for cleansing and buy triphala powder from ayurvedic medical store burn that triphala powder on pan and that black powder should be applied on penis at night with mixed with ghee this will cure infection I cured my many patients with this medicine this is treatment for 1 week don't use any other liquid for cleansing only plain water consult me after 1 week all the best don't worry this is not big problem at all and one more thing take gokhuraadi guggul 500 mg for one week twice daily before food with lukewarm water and some ghee

Redness, swelling, dryness and itching of the glans/foreskin may be due to balanitis, fungal infection, irritation or uncontrolled blood sugar. Prediabetes can increase the risk of such infections. Maintain good genital hygiene, keep the area dry and avoid self-medication until the cause is confirmed. Ayurveda can help as supportive treatment after proper diagnosis. Please consult me with images/details so I can assess the condition and guide the appropriate treatment.

Consult personally

it can be cured but proper examination is necessary.Moreover you can wash your penial region by lukewarm turmeric water and apply alovera n honey .