I have a baseball sized lump on my left inner thigh, and I noticed it yesterday. It is firm, warm, and tender to the touch. There is no discoloration, and it is not swollen large enough to be visibly noticed. I am a 24 year old male, 5 ft 10 inches, 300 lbs, and currently taking citalopram.
Hi.it is best if you consult with a doctor, preferably a general surgeon, for medical and physical examination. Based from your description, it could be a lipoma (fatty deposit), a fibrous or a cyst (a sebaceous or a gelatinous type). These lesions can occur anywhere in the body and have the tendency to recur.  Management (medical and surgical) will be directed accordingly. Hope this helps. Good day!!~ Chat Doctor.